this sucks. help please

[fast97gt]

alright i havent benn on in a while, so someone please help. i got 01 gt and i have an after market monster tach w/ shift lites, and im having trouble finding a signal wire. so any help would be great.

 

[the98stang]

alright i havent benn on in a while, so someone please help. i got 01 gt and i have an after market monster tach w/ shift lites, and im having trouble finding a signal wire. so any help would be great.

There are 2 wires for each injector. The wire that is NOT red is the wire that pics up RPM signals from the ECU. Once again, do NOT tap into the red wire, that is a switched 12v.

 

[mustang90]

If its an autometer the tach signal wire color is green. However, you will need a tach adapter to convert from the ecu. Try www.ponyexpressperformance.com they have really nice, easy to install ones.

 

[01Steeda]

i suggest the tach adapter route. it is the cleanest and most accurate. I tried the other route for my fuel pump controller at first but it gave sporadic readings.