Convert Hei Distributor Wiring Diagram

Replace the resistance wire that ran to your points system from the fuseblock with a 12guage wire pink insulated if you want to remain factory compliant and hook it up to.

Convert hei distributor wiring diagram. The second diagram shows where the wires go when converting to hei. Wiring for typical points ignition system. Powering them through the original wiring will mean that the ballast resistance will still be present. The first diagram shows a typical stock points system.

Note that the new hei power wire can be connected to the bulkhead connector as described in the above paragraph or it can be routed to the ign terminal found on most fuse panels. A wiring diagram is a streamlined conventional pictorial depiction of an electrical circuit. Then even with a cd ignition in the car you can also keep that small aluminum hei module plate as a backup. Tips and step by step procedures for retrofitting an hei distributor in your gm engine.

Heres the summary in a nutshell. Hei coils and ignition systems must be powered with 12 volts to work properly. How to wire an hei distributer. Variety of gm hei distributor wiring schematic.

So your ready to wire up an hei. Craig darpino from american autowire shows how to properly wire an hei distributer. The ballast resistance must be removed from the circuit to make sure 12 volts reaches the hei system. That way if the msd box fails it would only require a few simple wiring connections to hook up the hei module.

When converting from a points style distributor to an hei unit on most 1970 and earlier vehicles its a good idea to run a new 12 gauge wire from the bat terminal in the hei distributor cap. The second diagram shows where the wires go when converting to hei. Hei wiring conversion needs. Note that the new hei power wire can be connected to the bulkhead connector as described in the above paragraph or it can be routed to the ign terminal found on most fuse panels.

In fact msd makes a slick wiring adapter to convert your distributor to the small two pin msd connector. Wiring for typical hei ignition system. Weve included a simplified wiring diagram to. It reveals the elements of the circuit as simplified shapes and the power as well as signal links between the tools.