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View Full Version : How do I hook up an aftermarket Tachometer?


kenmosher
01-10-2006, 07:34 PM
Q: How do I hook up an aftermarket Tachometer?

A: If this is an 86/87, there is a green connector with a spade connector on the driver's side of the engine, roughly behind the A/C compressor. That has a 5v squarewave tach signal on it. It may take a 10k resitor between that and ground to work with some tachs.

PaCemkr86
01-10-2006, 08:46 PM
its the only green connector that has 2 wires at the connector

Keller
01-10-2006, 09:50 PM
It may be the only green connector...

Some tach's require modification as well. Such as VDO units. If your vendor doesn't do it, VDO might. See http://www.gnttype.org/techarea/bodygauges/vdotach.html However, some said this was no longer available. Check with VDO first.

86TURBO
04-06-2007, 11:57 AM
In regard to hooking up an aftermarket tach, my AutoMeter Sport Comp tach required that you cut a wire inside the tach for 6 cylinder operation and I wired it right into the green tach lead connector.
Vinny

DaveT
04-21-2007, 10:45 PM
With my auto meter ultra lite it just had little switches that you set for 6cyl 4cyl 8cyl etc... works great for me
http://i31.photobucket.com/albums/c390/buickgntuner/DSC01875.jpg