GM HEI Module Conversion Wiring - Pin W, C, G, B Connections (1994 Ford Probe)

This document is an annotated photograph showing how to wire a GM HEI ignition module for an ignition conversion. The white HEI module is shown resting on top of a printed factory wiring diagram, with blue and red crimp-on spade terminals attached to its pins. Four yellow callout boxes with red pointer lines identify each connection point: HEI pin "W" and the module's mounting hole must both go to a good ground point; HEI pin "C" connects to the Yellow/Black splice (labeled IG-); HEI pin "G" connects to the Blue/Orange wire, which serves as the ignition trigger; and HEI pin "B" connects to the Black/Pink splice, which supplies power. Wire colors visible in the photo include black (ground), green, red, and white leads terminated with insulated crimp connectors. The underlying wiring diagram fragment mentions directing voltage to the spark plugs as determined by engine speed and shows connector/ground designations such as C178 and G102. A reader can learn the exact HEI module pin assignments (W, C, G, B) and which vehicle wire splice each pin must be connected to when performing this HEI module ignition retrofit.