source for tach
Well, I've been out of the loop for a while, but if anyone remembers some of my previou posts I got the SC swap done. Just chasing a few gremlins now. The distributor to DIS swap went well, but the tach doesn't work. Anyone know where the tach on a 3.8 LX gets its signal from? On the SC it came from the Ignition Diagnostic Monitor pinout on the module so that's where I hooked the IDM circuit to, but no good. The Ford service manual is about worthless as it only shows for the DIS cars.