where does the white tach lead wire hook? Kinda hard to know where to hook it up with no wiring schematic on the car

 

Do a search and look for the computer pin labels or something like tha, thats what i did when i hooked mine up I think it was a white wire i just cut in to it about 8 inches of the computer. I think it was pin 10 not sure, it was a while ago.