Simple Tach Install for HEI Distributor (re-upload) - YouTube Click to view on Bing2:06Green to Distributor Negative ("TACH" plug). That's the way I wired it up. And don't forget the Little Cylinder Selector Switch on the back of almost EVERY Tach ever made, if you suspect your RPMAuthor: Syrus54Views: 125K Chevy Hei Distributor Wiring Diagram | Free Wiring Diagram Assortment of chevy hei distributor wiring diagram. A wiring diagram is a streamlined traditional photographic depiction of an electrical circuit. It reveals the elements of the circuit as streamlined forms, and the power and signal links in between the devices. HEI Distributor- Tach wiring issues?? | The H.A.M.B. I just put a HEI in my 32 that had a 1967 point distributor with a retro sun tach..I called Sun to check on correct wiring they said that I only had to move tach signal ( think that it was green) from neg side of coil to tach plug on the GM HEI. s fine Ford Hei Distributor Wiring Diagram - Wiring Forums Trying to find details regarding Ford Hei Distributor Wiring Diagram? you are right here. You might be a professional who wants to seek referrals or resolve existing problems. Or you are a pupil, or perhaps even you who just wish to know regarding Ford Hei Distributor Wiring Diagram. Gm Hei Distributor Wiring Diagram – Wiring Wiring an HEI distributor | Classic Parts Talk I put an HEI in my '57 GMC V8 years ago. Easy to do and works well. Assuming it is an early HEI (pre-computer with only two connections) one connection is tach output and the other is +12V. Looking down from the top the tach connection is clockwise from the +12V connection. The 12V feed needs to be fairly hefty. I ran mine through 10 gauge wire. Amazon: hei distributor wiring harness Amazon: hei distributor wiring harness. Skip to main content. A-Team Performance 150051 Pigtail Harness Cable Wires for HEI Distributor Battery and Tachometer Wiring 12V Ignition Coil & Tach Wire Connector Accessories Red and Green. 4.1 out of 5 stars 19. $0 $ 0. 99 $9 $9. Pertronix Wiring Diagram With Factory Tach I have wired it precisely to the John Hull wiring diagram with the BR wired in. . one of which plugs onto the HEI distributor, and the other onto the tach lead wire. Hooking this filter device in series between your distributor and tach should allow your factory tach to . TACH / Pertronix. HEI Conversion Wiring Instructions - Holdenpaedia HEI Wiring Conversion: HEI Wiring Conversion Needs: HEI Coils and Ignition systems must be powered with +12 volts to work properly. Powering them through the original wiring will mean that the Ballast Resistance will still be present. The Ballast Resistance must be removed from the circuit to make sure +12 volts reaches the HEI system. SOLVED: Need hei distributor wiring diagram - Fixya SOURCE: wiring an hei distributor You shouldn't need a spark box because thee coil is located in the dist. cap. You need to run a 12v switched power source to the side of the dist. cap that is marked dist. if it isn't maked it is the term. that is on the front right of the conector pad.