voltage sensing question
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=10200
Printed Date: May 14, 2025 at 2:46 PM
Topic: voltage sensing question
Posted By: xander
Subject: voltage sensing question
Date Posted: February 28, 2003 at 10:46 AM
If i want to use the voltage sensing option which wire do i hook the tach wire on the remote start to?
Replies:
Posted By: jrilla
Date Posted: February 28, 2003 at 12:03 PM
voltage sensing does not require a tach wire to be hooked up. Voltage sensing monitors the voltage on the vehicles power wires and looks for when the alternator bumps the voltage up when it kicks in. Only tach sensing requires a tach wire to be installed. If you want to use the tach monitoring then It helps to know what car you are working on for me to tell you. Otherwise you can typically go to an injector wire and grab the uncommon color. There will be one wire common to all injectors, grab the other one.
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J Rilla
Owner/Installer
Posted By: xander
Date Posted: February 28, 2003 at 12:44 PM
It's a 91 cutlass supreme which has a mulit-coil. I coudn't find the tach wire so i'm going to try the voltage sensing. Hopefully it works. Thanks for the help.
Posted By: Chris Luongo
Date Posted: March 01, 2003 at 8:25 AM
Voltage sensing usually sucks. Tach should be a PURPLE / white at the coil pack. If you can't find a PURPLE / white, it'll be white.
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