How do you go about connecting an aftermarket tachometer to a 1991 with a 5.0 and the stock TBI (throttle body injection) system? Is there a certain type of TAC I should use? No racing, just a cruiser…just want to be aware of what the engine is doing.
Thanks
Hey there, I'd think you could take the signal wire and attach it to the negative on the coil, I believe is where it goes. If I am not mistaken.
Ford or Chevy!
Yeah it's the negative side. Here is a video that might help.
youtube link
Well I found a video on U-Tube that shows (and explains) that there is a white wire coming out of the coil pack that is not used for anything (that I am aware of anyway) but you connect the “tac” or green wire to that white wire…has a factory type connector on it (found mine today) and I will (when the the time comes) see if I can find the “correct” connector to make the connection.