The domelight supervision output will do three things:
1. When you unlock the car, the domelight will come on (for up to 30 seconds). When you get in the car and switch the key on, the light will go out.
2. When you arrive at your destination and shut the car off, the domelight will come on so you can find your belongings before you step out.
3. When the alarm is violated, the domelight will flash to attract attention.
To answer your next question, yes, you can use a relay to power up the domelight wire and all will be fine.
If you want to save the extra labor and expense of using a relay, you may be able to find one of the individual doorswitch wires....this wire would catch just one of the doors, not all of them. Usually, these wires are low-current negative, and you can directly connect the alarm's domelight output without a need for a relay.
| ITEM | WIRE COLOR |POL| WIRE LOCATION |
| 12V|yellow & lt. grn/pur|+ |ignition harness |
| STARTER|RED / lt. blue |+ |ignition harness |
| IGNITION|dk. blue/lt. green |+ |ignition harness |
| SECOND IGNITION|gray / YELLOW |+ |ignition harness |
| THIRD IGNITION|lt. blue/pink *1 |+ |ignition harness |
| ACCESSORY|RED / black |+ |ignition harness |
| SECOND ACCESSORY|BLACK/ green |+ |ignition harness |
| POWER LOCK|pink / YELLOW |*2 |passenger kick panel |
| POWER UNLOCK|pink/green |*2 |passenger kick panel |
| PARKING LIGHTS +|brown | |light switch *3 |
| PARKING LIGHTS -|lt. GREEN/ YELLOW | |light switch *4 |
| HEADLIGHTS|RED / yellow |+ |light switch |
| DOOR TRIGGER|blk/yel & blk/pnk |- |*5 |
| DOME SUPERVISION|BLACK/ lt.blue |+ |passenger kick panel |
| FCTRY ALARM ARM|*6 | | |
|FCTRY ALRM DISARM|dark GREEN/ purple |- |drivers kick panel |
| TACHOMETER|*7 | | |
| BRAKE WIRE|light green |+ |at switch *3 |
| HORN TRIGGER|dk. blue |- |steering column |
| WIPERS| | | |
| LF WINDOW UP/DN|org/wht - wht/blk |A |in drivers door |
| RF WINDOW UP/DN|wht/yel - tan/lt.blu|A |drivers kick panel |
| LR WINDOW UP/DN| | | |
| RR WINDOW UP/DN| | | |
Notes:
NOTE: Some models of this vehicle are equipted with PATS (Passive Anti Theft System). Use DEI module 555F to over-ride during remote start. *1 Power this wire if vehicle is equiped with only rear anti-lock brakes. Vehicles with all wheel anti-lock brakes do not have this wire. *2 Negative pulse, type 'B', on keyless entry models. Five wire, type 'C', on non-keyless models, mastered from the driver switch. *3 May also be found at trailer connector next to diagnostic connector under dash. *4 If equiped with autolamps. *5 The BLACK / YELLOW catches the drivers door and the BLACK/ pink catches the passengers door. Use both wires and diode isolate each. See direct fax document # 1076 for wiring information. The wires are found in there respective door harnesses. Both wires may also be found at the GEM module located above the fuse box. On models without a dome light delay use ORANGE / lt. green (-) at the light switch. *6 Arms when locked with the door open. To simulate, send a negative trigger to the lt. blue/white wire at the RAP module, located behind the light switch, while locking. *7 Tach wire : on the 4.2L it is a dk.blue/lt.green at the coil pack on top of the motor. Tach wire : On the 4.6L go to any of the 8 ignition coils and use the wire that is not RED / green. Tach wire : on the 5.4L it is a lt.GREEN / WHITE at the coil on the passenger side of the motor between the fuel injectors.
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