automatic headlights (on/off with delay) chapter 13 classroom 408 to 411 lab 458 to 465
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AUTOMATIC HEADLIGHTSAUTOMATIC HEADLIGHTS(ON/OFF WITH DELAY)(ON/OFF WITH DELAY)
CHAPTER 13CLASSROOM 408 TO 411
LAB 458 TO 465
SYSTEM OPERATIONSYSTEM OPERATION
ALLOWS HEADLIGHTS TO AUTOMATICALLY TURN ON WHEN AMBIENT LIGHT DECREASES
ALLOW LIGHTS TO STAY ON AFTER KEY OFF POSITION FOR PREDETERMINED TIME
CAN BE INTERGRATED WITH OTHER LIGHTING SYSTEMS ALSO
COMPONENTSCOMPONENTS
PHOTOCELL AMPLFIER POWER RELAY TIMER CONTROL HEADLIGHT SWITCH HEADLIGHT BULBS
PHOTOCELLPHOTOCELLAMPLIFIERAMPLIFIER
Senses outside light Internal resistance
increases with less light.
When resistance value reaches predetermined value, lights go on.
Triggers autolamp relay
Point of turn on is adjustable CLASS 408
PHOTOCELL PHOTOCELL REPLACEMENTREPLACEMENT
Usually located on top of dash.
Usually built into amplifier assembly on Ford products
Cleanliness is important to interior work
L461
See Photo Sequence # 14
POWER RELAYPOWER RELAY
Provides Power to Headlights in Auto mode.
Can test like any relay
TIMER CONTROLTIMER CONTROL
HEADLIGHT SWITCHHEADLIGHT SWITCH
PHOTOCELL TESTPHOTOCELL TEST
Can make a tool to test Photocell. See Page 463 in Lab
Tool substitutes for photocell
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