1988 Ford F150 Alarm install
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=32023
Printed Date: May 10, 2025 at 6:48 AM
Topic: 1988 Ford F150 Alarm install
Posted By: rghrdr18
Subject: 1988 Ford F150 Alarm install
Date Posted: May 11, 2004 at 11:42 PM
I am installing an alarm into a F150 Custom, and looking up the alarm diagram for my truck, i found that none of the wires match. I am trying to find the Constant 12V, (which i found 2 wires that ran 12V with my DMM), and the starter wire. Please help.
Replies:
Posted By: profuse007
Date Posted: May 12, 2004 at 12:58 AM
| ITEM | WIRE COLOR |POL| WIRE LOCATION |
| 12V|yellow |+ |ignition harness |
| STARTER|RED / lt. blue |+ |ignition harness |
| IGNITION|RED / lt. green |+ |ignition harness |
| ACCESSORY|gray / YELLOW |+ |ignition harness |
| POWER LOCK|BLACK/ orange |5wi|either kick panel *1 |
| POWER UNLOCK|pink/green |5wi|either kick panel *1 |
| PARKING LIGHTS +|brown | |lt switch or dr kick |
| HEADLIGHTS|RED / yellow |+ |at switch |
| DOOR TRIGGER|BLACK/ blue |+ |driver kick panel |
| TACHOMETER|tan / YELLOW *2 | |at coil |
| BRAKE WIRE|lt. green |+ |brake pedal switch |
| HORN TRIGGER|dk. blue |- |steering column |
| WIPERS| | | |
| LF WINDOW UP/DN|red - yellow |A |in drivers door |
| RF WINDOW UP/DN|RED / blk - yel/blk |A |in drivers door or dkp |
Notes:
*1 ESSENTIAL to use driver's switch when testing for switch and motor sides. *2 On diesel trucks use WHITE/ black at the alternator for tach. Also the wait to start wire is BLACK/ pink (-) at the warning light on the dash or the glow plug controller on the center rear of the engine.
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Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).
Posted By: rghrdr18
Date Posted: May 12, 2004 at 10:37 AM
That wiring diagram does not match any of the colors i have on my truck's iginition harness. Please help.
Posted By: profuse007
Date Posted: May 12, 2004 at 1:27 PM
-does any of those wire match at all?
-finding wires at the iginition harness is really easy. look at the thick guage wire.
starter: 12volt (+) only when crank
ignition/acc: 12 volt(+) when key turn once-acc. 12volt when key turn twice-ignition
thats it!!!!
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Houston,TX
"The two most common elements in the universe are H+ and stupidity" (Ellison).
Posted By: rghrdr18
Date Posted: May 12, 2004 at 1:30 PM
No, none of the wires match. I printed up the wiring diagram yesterday from this web site and looked at the wiring harness in the truck, and nothing matched. But, I will try that today. Thanks for the help.
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