Tachometer sensor wire?

PorterzSupra

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Oct 25, 2005
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What is the best way to hook up a tac sensor wire in the MKIII for an aftermarket tac?? Is there a wire under the wheel or should I just hook it up to one of the coil wires?? If so wut one?? I did a quick search but dident find it, THX -Eric
 

socc924

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Mar 31, 2005
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CT and Philly
A while ago I was trying to hook up a sunpro guage into my car, but it turned out that I needed some sort of harness or connecting wires in order to use it so i gave up. What kind of tach do you have and did you get any directions?
 

PorterzSupra

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Oct 25, 2005
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no, I know how to hook up tacs its very basic, one wire to switched 12V, one to constant, one to ground and green to tac sensor usually you always hook it to the negitive side of the coil but on our cars we have 3 coils so I guess your suppose to hook it to the tac wire that goes in our harness but I dunno the location of it exactly and the color
 

socc924

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Mar 31, 2005
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I dont know what year your supra is, but here is a layout with the speed sensor's location for an 89 harness. It might even be the same for pre-89.
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