Additional Wiring. Why you ask? I just built a Bussmann 10 fuse & five relay box late last year. Unfortunately, I didn’t build in easy expansion for twin plug and providing lower coils with their own switched 12v+ power. It really didn’t turn out to be that difficult once I unbolted the Bussmann panel and could flip it around to the backside for pinning new fused circuits and moving some existing circuits and pinning a few new fused relay circuits.
Started with:
Moved some wiring around
Ended up with
And edited a new page in my handy dandy written notes on all things wiring so if this car ends up in the hands of someone else someday, there should be no mysteries on wasted hours trying to figure out how this EFI swap was wired up.
So, this Bussmann panel is as follows:
Fuse
F1 20A fuse Coils upper with 12 ga power wire from Relay
F2 5A fuse 964 Resonance Flap
F3 10A fuse Fuel Injectors with 16 ga power wire from Relay
F4 10A fuse ECM
F5 20A fuse Coil lower with 12 ga power wire on Relay
F6 empty
F7 5A fuse ECM switched key-on with 16 ga power wire from Relay
F8 empty
F9 5A fuse O2 sensor heater And Crank & Cam Sensors with 14 ga power wire from Relay
F10 empty
Now, time for reassembly of intake, exhaust, fan assy, engine tins and whatnot. This was easy and went quickly as I just repeated the same steps from winter ’24.
Notice the M&K style used headers with 1-1/2” primaries that I picked up from eBay. Came from Kalifornia. Sure didn’t notice how far forward they wrapped around up under the transmission. Yea me…
Precision Matters. Best name for a small Porsche parts specialty manufacturer. Nice deep, recessed sump cover to accommodate the GT-3 oil pump strainer. Pretty piece & well made for sure.
