View Single Post
dannichols1474 dannichols1474 is online now
Registered
 
dannichols1474's Avatar
 
Join Date: Sep 2019
Location: Milpitas, CA
Posts: 277
Garage
Replace the main power and ground wires for the EFI

With new moisture resistance connectors installed, I turned my attention to the main power supply and ground wires for the EFI; as well as, the high current power and ground wires for the MSD CDI box.

When I originally installed the ITB EFI system I used 10 awg solar system wire that I had left over from the solar power installation at my house. The solar wire has high heat and UV tolerance and plenty of dielectric stand off strength, but the insulation is thick and pretty stiff so it was hard to work with. In its place I used 12 awg automotive grade copper wire.

Unfortunately, the main wires were buried beneath the rest of the EFI wiring so replacing them meant unwrapping and taking apart the EFI wiring. The upside is I get to improve the wiring layout and should end up with a more tidy installation.

Following are photos of the tear down and re-assembly:





EFI wiring harness unwrapped and main EFI power wire removed:


Removed the fuel filter and disconnected the MSD CDI high current wires:




Old MSD CDI high current wires are removed:


Main EFI ground wire where it attaches to the chassis ground lug behind the fuel filter:


Old main EFI ground wire removed:


New MSD CDI high current ground wire installed at chassis ground lug next to the transmission shift rod tunnel:
__________________
Dan
1975 911 Carrera

"CIS to ITB EFI conversion" thread
Updated (2) Table of Contents pg17 post 339
Old 04-29-2024, 11:29 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #130 (permalink)