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Discussion Starter · #1 ·
I have a digital temp gauge. In order for the gauge to go off when the car is off, i suppose i couldnt just hook the 12v wire to a constant supply, like say the + battery terminal. So where is the ignition wire in this car? I looked on mkiv.com but this gauge doesnt have a harness or anything so ide need to splice into the ignition switch wire directly. I assume its under the dash somewhere, but theres a million wires. Which one is it?
 

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3,021 Posts
you can use your fuse box. invest in a test light and either find an empty one that's ignition powered or find something that's ignition powered.
 
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