i need help bad with tach wire for 99' f150

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=7204
Printed Date: July 24, 2025 at 10:21 PM

Topic: i need help bad with tach wire for 99' f150

Posted By: supertremor
Subject: i need help bad with tach wire for 99' f150
Date Posted: December 27, 2002 at 7:40 AM

i can't find the tach wire on my truck it is a 99' xlt v8 or if i can get a complete diagram for aps9995 prestige alarm for my truck thx

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supertremor

Replies:

Posted By: jrilla
Date Posted: December 27, 2002 at 8:50 AM

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 it is a pink/white in a 3 pin plug at the front of the motor below the air intake and next to the fan. 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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J Rilla

Owner/Installer

Posted By: Velocity Motors
Date Posted: December 27, 2002 at 8:54 AM

Use one of the injector wires for this truck if you can't find the tach wire. Use any of the uncommon colored wires as your tach signal. Here is the installation diagram for the APS 995 ( I think you typed in the wrong number above ):

https://www.audiovox.com/manuals/installationmanuals/1286166_IM.pdf

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: supertremor
Date Posted: December 27, 2002 at 11:14 AM

ok i found the pink and white wire i connected it but i can not get the alarm to learn the aps 995 prestige alarm manual said the i should turn the ign on then press then i should press the program button 3 times then turn off ign then hold down button and start then it start blinking then park lights that it did but and then after it was surposed to blink 3 time to let me know that it is out of learning mode that it did not

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supertremor

Posted By: Velocity Motors
Date Posted: December 27, 2002 at 3:07 PM

Make sure that you re doing all the steps one after another. SOme systems give you s time frame to complete the programming and if it takes longer than the allowed time, it defaults automatically into normal mode.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA