Reply to "Tach wire tap in"

Thanks but instead I do see under the dash near the tach where the wires from the tach come to a plastic red colored disconnect. I think I can at least track the wire from the back of the tach to the red colored disconnect and tap in at the disconnect. I just want to make sure I select the correct wire from the tach that goes into the disconnect. I'm going to try that. Otherwise I'll have to try to contort myself under the dash to try to pull the wire from the tach. No Bueno.