Sniper EFI observations

There is a provision for tach wiring in the manual but Not sure how happy the factory tach is with that as the xr7 tachs are a little different wiring then most. Someone else will chime in on the function of the factory tach. I have an aftermarket tach in my car and that’s as easy as hooking up a wire.

For the key on power make sure you grab that from a source that has 12v at key on and during cranking, this is important as not all key on sources have 12v during cranking. Like mentioned a common source is the pink resistor wire at the ignition switch. I choose to use an auxiliary relay/fuse box to add additional wiring under the hood so I included a relay for the ignition here too. I also used this for my electric fans and controller, 12v battery power to the radio and will be used for the sniper and cdi box stuff. I grabbed the 12v ignition source at the starter relay, this then is used to power a relay in the aux relay box to power all sources that will need it.