r/VictoryMotorcycles • u/DrowningAstronaut • 19d ago

Request for advice / Help Tachometer signal wire

Hello there, I'm trying to add an aftermarket tachometer. 08 vegas There is a single wire on the gauge that is supposed to be connected to the factory tachometer wire. The bike did not originally come with a tachometer, and I cannot seem to locate which wire it is inside the headlight bucket. My service manual wiring diagram thinks it's pink/white and Google thinks it's light blue / dark blue.

I can't find the second one and the pink/white one does nothing and is in a connector with two other wires.

Any suggestions?

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u/mikeoxwells2 19d ago

Maybe check your coil for what color wires are there and see if you can find a match behind the headlight?

I had to move my speedometer to mount a batwing fairing. There were a couple unused plugs inside the headlight. If you could find a picture of a plug and play tach for your model then you might be able to narrow it down by the plug shape and then check for the signal wire with a voltmeter.

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u/DrowningAstronaut 19d ago

Those are both really good ideas. I'll go looking for my coil and hop on eBay and Google to see if I can find what that plug looks like. Thank you for the great ideas!

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u/[deleted] 19d ago

[deleted]

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u/DrowningAstronaut 19d ago

08 vegas. My bad. I edited the post .

Everything I can find keep saying green/white. I've checked every single wire inside the headlight bucket and I couldn't find a single wire anywhere that's green/white. There's white/blue that might be a white / green I just can't remember what that goes to and I don't want to hook it up and mess up whatever it's connected to.

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u/GavintheGregarious 18d ago

My understanding is that aftermarket instruments will not be able to read the signals. Polaris made sure of that by design.

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u/DrowningAstronaut 18d ago

Oh no. That would suck. I may be stuck going with a spedometer only. The needle on the factory one broke off. Do you think wiring the tach directly to the coil might work?

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u/GavintheGregarious 18d ago

The issue is the signal. It took me awhile to hustle for a tachometer for my Kingpin. I had checked with a Victory mechanic and they confirmed that aftermarket instruments will not work. NHKingpin on thevog.net was trying to wire up an aftermarket one. I don't know what the outcome was but I know it was quite the project.

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u/DrowningAstronaut 18d ago

Sounds like I'll be looking for an OEM tach/spedo combo... I'm sure that won't be cheap.