TAC Tech > Electrical

Converting base Firebird gauges to Trans Am rally gauges

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one79firebirdguy:

--- Quote from: Wallington on February 09, 2022, 11:09:54 PM ---The tacho uses its own separate harness and is complete in pic. Black plugs onto tach rear, pink is the jumper cable off fuse box accessories and has offset pin on plastic so it only fits one only, from memory the IGN one, and has jumper plug off it for power windows etc if multiple plugs use it. The white plug clips onto the HEI where it says Tach.

Simple as that, can test with it wired up sitting on top of dash or cowl if wiring long enough prior to full install. Many original tachs no longer work so good to make sure before you get too far.

--- End quote ---

Thanks so much!

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