Need help with Tach install

Kdubslugga

Active Member
Jun 7, 2003
1,515
3
38
Akron, OH
I just bought a Phantom 5" Tach and I got the wiring done except the one to the coil. Im assuming i have to splice into the blaster coil but im not sure which wire to cut, I think its the tan one with a yellow stripe, I just wanna make sure this is right!!!
 
Ack, dont cut any wires. You splice *into* the negative side of the coil.

Now if you have a MSD box too, there's a port for the tach hook-up.

Good luck.
 
Ignition coil wire legend:
Red/Lt green wire: Positive side switched power from the ignition switch. Use this one to supply power to the tach.

Dark Green/yellow: negative side signal to the TFI module. Use this wire to sent the signal to the indicator circuitry inside the tach. This wire pulses every time a cylinder fires.
 
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