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This is my second time wiring these coils and the first time I kept all the secondary grounds together and all the main grounds together and had two ground leads coming off the sub loom.
This time I have merged them all together in the sub harness but upon finishing it I have started to second guess myself. Will grouping the grounds all together cause any issues?
This is how I’ve wired them - (v8 2 sub harnesses of 4 coils)
pin 1 12v - 20g then all joined together to single 16g
pin 2 and 4 (both 20awg) joined together to single 16awg to the cylinder head
pin 3 to ecu (maxxecu race)
