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Discussion Starter #1 (Edited)

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Supercharged '07 DC 4x4
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The tach wire on a 1GRFE is black with white stripe coming out of the engine control module. You should tap power from something tied to the ignition so you avoid any kind of parasitic drain on your battery.

You really need to download the wiring for our trucks so you can understand for yourself.

Edit: Not trying to sound rude...just a good idea to understand what's going on before cutting into the wiring on your $20-30K truck.
 
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