TDI Tach Signal

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Forum Name: General Discussion
Forum Discription: General Mobile Electronics Questions and Answers
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=7102
Printed Date: September 06, 2025 at 4:55 AM

Topic: TDI Tach Signal

Posted By: aBusDriver
Subject: TDI Tach Signal
Date Posted: December 24, 2002 at 1:07 PM

Anyone know which wire to use on a VW TDI to get a tach signal for a remote starter? (-input)

Thanks...

Replies:

Posted By: Velocity Motors
Date Posted: December 24, 2002 at 9:28 PM

The 4 cylinder tach wire is green with a stripe. @ ignition coil
The 6 cylinder tach is either purple with a stripe, or black with a stripe. @ ignition coil

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

Posted By: aBusDriver
Date Posted: December 24, 2002 at 9:43 PM

No coil on the TDI (diesel). The wire to the tach is AC only and the starter only recognizes a negative pulse. I suspect I might need to use the "vacuum mode" on the remote starter. The Command Start CS260M that I'm trying to install requires a mod to be done to the main board to use this mode. I don't however have this info. Anyone out there remember how this is done?

Mike

Posted By: billy666
Date Posted: January 01, 2003 at 4:51 PM

I just installed a remote starter and i didn't want to run a wire to the engine and I didn't want to touch my ecm. so i took the instrument panel out and I found one going to the rpm thing. whats that called? I got my volt meter out and set it to ohms and checked the wires. the ohms will increase when you give the car gas. mine was the second to the last and it was grey.

Posted By: aBusDriver
Date Posted: January 01, 2003 at 8:56 PM

Was this on a Jetta as well?

Mike

Posted By: hose A
Date Posted: January 02, 2003 at 1:00 PM

need a tach. signal location for a 96 chevy S-10 as well as stereo wiring diagrams.

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mad scientist on board

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