I recently purchased an after market tach from Classic Industries and installed it in the dash but haven't gotten to wiring it in yet. According to the instructions I have to ground one wire, connect another to the negative coil post, and the third wire goes to a 12V key on power source. I am not at all an electrician, so I turn to more knowledgeable people. For the 12V key on power source could I use the ACC or BATT locations on the fuse block or should they already be taken by something else like a the lights package?
Thanks,
David