instructions for installing an overhead console (ohc) in …lucidcc.com/overhead console.pdf1...

Instructions for

installing an Overhead

Console (OHC) in a 2014

Toyota Access Cab to

restore the Outside

Temperature and

Compass Functions

Version 1.00

of 37 Copyright © 2014 Lucid Enterprises, Inc. 06/08/2014

Table of Contents

Table of Contents Table of Contents..................................................................................................2 Overview...............................................................................................................3 Comparing the 2005 OHC with the 2014 OHC .....................................................4 Wires Signals Needed ..........................................................................................4 Connectors and Wires ..........................................................................................5 ATS Connector A13 – Engine Compartment ........................................................7 Mounting the ATS ...............................................................................................12 Routing Wires from Ambient Temperature Sensor .............................................14 Routing Wires from the OHC to Connector 1E ...................................................15 Routing Wire from the OHC to Connector A14 ...................................................17 Inside Wiring – Connector A14 (P/N: 90980-12555_ ..........................................18 Inside Wiring – Connector 1E .............................................................................19 Inside Wiring – ATS ............................................................................................22 Connections for I8 (P/N 90980-12370 F) (Empty Plug is 90980-12369 M) .........25 Assembling the OHC Meter Connector A28 .......................................................27 Overhead Console Modifications ........................................................................29 Compass Calibration...........................................................................................36 The Final Product................................................................................................37


Overview There are two methods for installing an Overhead Console (OHC) with an outside temperature gauge and compass on a 2014 Toyota Tacoma Access Cab. These instructions may apply to other years and models as well:

1. Purchase an OHC for a 2005-2008 Tacoma; run 4 new wires; add a new Ambient Temperature Sensor; modify the new OHC to accept the hands-free microphone. This is the method described in this document.

2. Purchase an OHC for a 2009-2011 Tacoma; run 3 new wires; modify the OHC to accept the hands-free microphone. This method uses the existing Ambient Temperature Sensor, but I have not tested this method and instructions are not included in this document.

Front and back views of the 2005 Overhead Console to be modified and installed in the 2014 Access Cab


Comparing the 2005 OHC with the 2014 OHC

The 2005 OHC is on the left and the 2014 is on the right

Wires Signals Needed The 2005-2008 Overhead Console requires 6 signal wires as described below. More information is included in the A28 Connector information. Abbreviation Wire Color Description IG+ Light Green Power when Ignition is turned on GRND White/Black Ground SI Violet/White Speed Indicator used to allow Temperature Gauge

to take a reading and to allow Calibration of Compass. This is the signal that prevents you from using some functions in your vehicle when it is moving.

ILL+ Green Dims your display when your headlights are on TEMP+ Yellow Positive side of Ambient Temperature Sensor TEMP- Gray Negative side of Ambient Temperature Sensor


Connectors and Wires I8 Connector (existing connector in headliner near OHC)

Wire Color Pin Number Description Red 8 Battery Power (7.5 amp fuse) – not used

Black/White 2 Ground to A28, pin 2 Light Green 1 Ignition to A28, pin 1

A28 Connector (New Connector for OHC – P/N 90980-11923) New Wire Color 1

Normal Wire Color Pin Number Description

Black Gray 6 Temperature Sensor (TEMP-)

White Yellow 5 Temperature Sensor (TEMP+)

Green Green 4 Illumination (ILL+) Red Violet/White 3 Speed Indicator (SI)

Black/White Black/White 2 Ground (GND) Light Green Light Green 1 Ignition (IG+)

1E Connector – Located on left side of vehicle behind small storage bin New Wire Color Pin Number Description

Green 6 Illumination to A28(4) 1E used to have connections for the Ambient Temperature Sensor and Speed Indicator (SI) in prior models, but the connections are no longer there. Even the SI connection has been abandoned. Two of the other wires from the cable you install will be used to connect to the Ambient Temperature you will install. Leave enough wire so the connection can be made to the white and black wires in the cable. A14 Connector (A/C Amplifier P/N 90980-12555) – Located on right side of vehicle behind glove box New Wire Color Pin Number Description

Violet 2 Speed Indicator (SI) to A28, pin 3 Yellow

A13 Connector (Ambient Temperature Sensor P/N 90980-11070 – New Connector to be Located in engine compartment

Wire Color Pin Number Description Wire Part Number

Gray 1 TEMP (-) to A28, pin 6 82998-12440 Yellow 2 TEMP (+) to A28, pin 5 82998-12440

1 New Wire Color is from the 4-conductor cable installed


Items Needed (partial list)

QTY Item Notes 1 Overhead Console (OHC)

P/N 63650-04010-B0 Overhead Console with Temp & Compass for 2005-2008 Tacoma

1 OHC Connector Plug (A28) P/N 90980-11923

6 Female Pins for A28 Connector P/N 82998-12690

Crimp pins to be used in OHC Connector

2 Male Pins for I8 Connector P/N 82998-24270 or two wire splices , red

For connecting I8(1) to A28(1) and I8(2) to A28(2). I used the splices.

6 ft 4-Conductor Cable Route from Roof Liner to Connector

1E(6) 4 #8 ½” self-tapping screws For reassembling the OHC after the

microphone has been installed 6 #8 flat washers To hold the microphone assembly in

place. Two washers must be used on each screw on the short end of the OHC


ATS Connector A13 – Engine Compartment Parts Needed:

QTY Item Notes 2 82998-12440 Repair Wires Air Temperature Sensor Connectors

12’ 18 gauge White Wire From ATS to inside Truck near 1E 12’ 18 gauge Gray Wire From ATS to inside Truck near 1E 1 3.5mm x 2” white shrink

wrap

1 ATS housing 90980-11070) For connecting Temperature Sensor 2 Butt Connectors, red For connecting wires

Connector and Repair Wires

Plug Schematic


1. Add a 2” piece of 3.5mm shrink wrap (white or yellow) to one of the repair wires (P/N: 82998-12440).

2. Cut 1-1/8” off of the end of the repair wire without the shrink wrap to allow

for less bulk when assembling the cable assembly. 3. Place wires into ATS housing (90980-11070) noting the correct orientation

and placement. The connector with the shrink wrap goes to pin 2 and the black wire goes to pin 1.

4. Crimp two butt connectors to each wire. Do not crimp the other side yet.


5. Place a 4” piece of 7mm shrink wrap over the two wires: DO NOT SHRINK THE TUBING YET.

6. Cut the wires in the engine compartment so that they can be attached to

the connector. Be sure that the yellow wire is 1-1/8” longer than the gray wire so that they will match properly.

7. Crimp the other end of the Butt connectors to the appropriate gray and

yellow wire.


8. After crimping the wires, slide the shrink wrap over the butt connectors and heat the shrink wrap to make the joint water tight.

9. Route the two wires from the center column, through the fire wall to a

location near connector 1E on the driver’s side of the vehicle. There are posts showing how to do this, but I found it more difficult than others said it was to do.

I soldered the two wires together to a piece of 12 gauge house wiring

The wires were pushed through the boot at the hood release cable


Finally, the wires were successfully pulled into the cab

And rerouted to behind the small storage compartment


Mounting the ATS Ambient Temperature Sensor Part Number: 88790-22131.

There is already an ATS mounted in the center column for the A/C. There is a large hole that can be used to mount the new sensor. A thin plastic washer will have to be fabricated to allow the ATS to be mounted on the other side of the center column.

1. Connect the ATS to connector A13.

2. Fabricate a thin plastic washer.


3. Place the ATS assembly into the large hole and secure with the thin plastic washer.


Routing Wires from Ambient Temperature Sensor Run two wires from the center post in the engine compartment, through the fire wall to a location near connector 1E. This topic is covered in other Tacoma World posts. Removing Radiator top Wires routed with shrink wrap in front of

radiator with top removed

Wires routed in front of radiator


Routing Wires from the OHC to Connector 1E Wires will be routed via a 4-conductor cable from the OHC to the 1E connector located behind the pop-out storage box on the left side of the vehicle. This is a distance of approximately 6 feet. The side grip-panel on the driver’s side of the vehicle will be removed to route the wires. I used a 4-conductor cable (20 AWG wire), although I later found out that the Speed Indicator (SI) signal that would have been connect to the red wire was no longer available on the 2014.

1. Starting in the Roof Lining, route the cable to the driver’s side.

2. The wire will be routed down through the driver side window column.


3. And then down behind the dashboard.

4. Use tie wraps to secure the cable.

5. The wires should be routed to behind the small storage door where the

connector 1E is located.


Routing Wire from the OHC to Connector A14 A single wire will be routed from the OHC to the A14 connector located above and behind the glove box. Unfortunately, this connector is difficult to access. The side grip-panel on the passenger’s side of the vehicle will be remove to route the single wire. I used a 22 AWG violet wire. You could also route the wire from the A14 connector to the red wire on the driver’s side of the vehicle, but I was unable to find an easy way to rout the wire. Please follow the instructions for routing the wire to connector 1E, but run this single wire down the passenger side column instead.


Inside Wiring – Connector A14 (P/N: 90980-12555_ Parts needed: QTY Item (see instructions for more information)

1 82998-12870 Terminal Repair Wire (optional) 1 Snap Connector Splice, red (optional) 1 Crimping Wire Nut connector (optional)

The purple wire will be connected to pin 2 of A14 (violet/white). I used a red snap connector splice to tap into the wire, but the splice cut through the light gauge wire. It took me quite some time to repair the damaged wire. I might suggest that you purchase a Terminal Repair Wire (P/N: 82998-12870 and insert it in to pin 2 of A14 (removing the existing wire) and splice the 3 wires in a crimping wire nut.

Snap Connector and Violet-White Wire (which was damaged!) and new violet wire.


Inside Wiring – Connector 1E

Parts needed: QTY Item

1 82998-12340 Terminal Repair Wires 1 Butt connectors, red 1 TS090 Female Crimp Terminals (TS090-FT) can be used (as I did) to

replace the repair wires and butt connectors.

Only 1 set is needed


Instructions:

1. Crimp a TS090-FT terminal onto the green wire in the 4-conductor cable

(originally, the red wire was going to be used, but the signal is no longer available here). Alternatively, use a repair wire and a butt connector.

2. Remove the 1D connector plug to get access to the 1E connector.

3. Remove the 1E connector.

4. Using a 1.2mm jeweler’s screwdriver, pop up the terminal retainer strap,

but do not remove! This will allow you to insert the wire terminals.


5. Snap the green wire terminal into pin 6 (originally, the red wire terminal would go to pin 5, but that signal is no longer available).

6. Press the terminal retainer strap back in place 7. Replace the 1C connector. 8. Replace the 1E connector.

9. Secure the cables behind the panel and replace the storage box.


Inside Wiring – ATS Parts Needed: QTY Item

2 Butt connectors, red 1 Set of HM090 2-position connectors can be used (as I did) to replace the

butt connectors. The ATS wires have been routed to behind the small storage box and the 4-conductor cable has been routed from the roof lining. Now, the ATS has to be attached to the roof lining wires.

Instructions:

1. Place male terminals on gray and yellow wires that were routed from the Ambient Temperature Sensor (if using the connector, otherwise use two butt connectors).


2. Place shrink wrap over the wires and insert the pins into the male connector.

3. Separate the black and white wires from the 4-conductor cable.

4. Put the female pins on each of them (if using the connector, otherwise

connect to the two butt connectors in step 1).

5. Put terminals in housing, making sure the white wire lines up with the yellow wire and the black wire lines up with the gray wire.


6. Snap the connector together (if using the connector, otherwise crimp the wires together to the installed butt connectors).

7. Tuck the wires away neatly on the left side of the console, using tie wraps

as necessary.


Connections for I8 (P/N 90980-12370 F) (Empty Plug is 90980-12369 M) Parts Needed:

QTY Item Notes 2 82998-24270 Male Terminal

Repair Wire (optional) Terminals, if used can be inserted in the existing terminal plug

2 Snap Connector Splice, red (optional)

I used the Snap Connectors rather than the terminals (above)

11 in 18 AWG wire, Green Connect from A28(1) to I8(1) Connector

11 in 18 AWG wire, Black/White Connect from A28(2) to I8(2) Connector

Two wires need to be connected between I8 and A28 (new) for the OHC compass and temperature power.

The I8 Connector that is located in the head lining


Connections to I8 using Snap Connectors


Assembling the OHC Meter Connector A28 Parts Needed:

QTY Item Notes 6 82998-12690 Female

Terminal Repair Wire s(optional)

Butt connectors are required if this method is used

6 Butt Connectors (red) If Repair Wire is used 6 Crimp Terminals Pins: .040"

F040 Terminal - Female 28-20 AWG 2

Cleaner and less expensive install than using the repair wires and butt connectors

A28 Connector (New Connector for OHC – P/N 90980-11923) 3

Two wires installed in A28 to go to I8. The pins were replace with snap connectors.

2 I can get these terminals if anyone wants them 3 I can get replacement A28 plugs for less money than Toyota charges


Four wires from cable attached to A28

Connect a Terminal to each of the 6 wires (Repair Wire P/N: 82998-12690). I used actual terminals that I crimped to each wire, making for a cleaner installation. The terminals are less expensive than the repair wires and you don’t need to connect each wire with a barrel connector. New Wire Color Pin Number Description

Black from 4-conductor cable

from ATS

6 Temperature Sensor (TEMP-)

White from 4-conductor cable

from ATS

5 Temperature Sensor (TEMP+)

Green from 4-conductor cable from 1E, pin 6

4 Illumination (ILL+)

Violet from A14 3 Speed Indicator (SI) Black/White

From I8, pin 2 2 Ground (GND)

Light Green from I8, pin 1

1 Ignition (IG+)


Overhead Console Modifications After you complete the wiring for your OHC, everything should work properly. Be sure to test out the functions before you start modifying the OHC that you just purchased. If the SI wire is not installed correctly, the Temperature will not register properly and the Compass cannot be calibrated. Once you are satisfied that everything is functioning correctly, you can begin to modify the OHC to allow for the placement of the microphone. Parts needed: QTY Item

1 Overhead Console (OHC) P/N 63650-04010-B0 2 OHC Clips P/N 63650D – my unit did not come with the clips. Order them

separately, or use the clips from the 2014 OHC. 4 ½” x 8 Self-tapping screws 6 #8 flat washers - Epoxy Cement - Silicone Caulk 1 Cable tie mount 1 3” cable tie

The missing OHC Clips Example of screws and washers Instructions: First of all, you will need to remove the microphone assembly from the 2014 OHC by using a screw driver to pop the retaining tabs for the assembly. This can be done from the back of the light assembly, once one side (two tabs) have been released, the assembly can be popped out from the other side. Remove the microphone by releasing the two tabs on each side of the long assembly. Place the microphone aside for later use.


OHC with Microphone Assembly removed from 2014 Tacoma

Removed Microphone Assembly (back and front views)

Microphone assembly – use gray holder as a

template for modifications Removed Microphone to be used in modified

OHC


The following modifications will be made to the newly purchased Overhead Console used for a 2005-2008 Toyota Tacoma Access Cab:

1. Remove the light assembly by removing the flanges from the four (4) “screw” holes and the two flanges on top of the assembly.

2. Using the removed microphone assembly (without the microphone in

place), mark the new OHC to show where the new microphone air slots will be placed. Use a fine point felt pen.


3. On the back side of the assembly (now accessible after the light assembly was removed), mark where plastic has to be removed by placing the microphone in the proper location.

4. Remove the excessive plastic so that the microphone will set firmly

against solid plastic. Put the microphone aside for now.

5. Cut three (3) microphone sound holes and clean the burrs away. Use

sandpaper, files and knives to clean the area. NOTE: When cutting from the front side of the OHC, use masking tape to ensure that you don’t scratch the OHC!

6. Once you are satisfied with the modifications to the plastic, place the

microphone inside the cleared area over the newly created microphone slots. The wires should be placed on the right side when looking at the OHC with the meter assembly on top. NOTE: the wire is on the wrong side in the pictures.


7. Secure the sides of the microphone with silicone caulk, making sure that no caulk gets under the microphone.

8. Tape the microphone in place (temporary) and let dry for 12 to 24 hours.

Remove the tape after the assembly has dried.

Once the assembly has dried, you can start reassembling the OHC:

1. Re-install the light assembly.

2. Use two screws and two washers on the meter side of the assembly.


3. Use two screws and four washers on the sunglass side of the assembly (two washers per screw) to ensure that the tip of the screw does not protrude through the OHC as it did on mine!

4. Use epoxy to glue the two flanges on top of the light assembly.

5. Mount a cable tie mount on top of the meter assembly.


6. Secure the microphone connector with a cable tie and a dab of the silicone caulk to prevent movement.

7. Install the newly modified OHC, attaching the 3 cables.

8. Final look for microphone holes


Compass Calibration The compass will need to be calibrated when used for the first time. Use the following link for calibration instructions: http://autoclockrepair.com/yahoo_site_admin/assets/docs/2006_Tacoma_Compass.204150004.pdf Note, if the compass cannot be calibrated, it is probably because the Speed Indicator (SI) signal wire is not connected correctly from connector A14. In my first installation, I actually severed the connection and had to splice the wire again.


http://autoclockrepair.com/yahoo_site_admin/assets/docs/2006_Tacoma_Compass.204150004.pdf

http://autoclockrepair.com/yahoo_site_admin/assets/docs/2006_Tacoma_Compass.204150004.pdf

The Final Product

The new display showing the current temperature and compass direction

Full view of installation

The arrow shows where the screw protruded using only one washer


instructions for installing an overhead console (ohc) in …lucidcc.com/overhead console.pdf1...

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