How did you wire your 12 cop setup?
 

I have already fitted ground and 12V for the connectors with wire length enough for a terminals somewhere in the both engine bay sides. Trying to figure how I should route the signal wires and how to double them cleanly.

Down from the back of the sidesheets or behind the engine using the caps? I have my wires mostly coming from tunnel come up on the passenger side cap between engine bay and rear seats.

Waiting for CF shroud kit to arrive so I could make wire passages down where I want basically.

I drilled over sized holes (6) in the engine tins above the COP's and used rubber grommets.... no real easy way to get there, just what you can live with i guess!

Any reason for you to not route them by one hole per side? Just trying to find the best way for maintenance and looks

Either way, make the hole big enough to remove COP connector, for ease of removing engine later... my harness/wires go right to the COP from ECU with no connectors in between...

I used (I think) 18AWG 3-conductor, shielded, twisted Tefzel Mil-Spec wire for all the connectors. For bundles I ran then inside heat/oil/fire resistant fiberglass "snake skin" expandable sleeving and sealed the ends with adhesive lined double-wall heat shrink.

I designed/3d printed a for-purpose buss bar with +12, chassis ground, and Spark A, B, C (I am running wasted spark). I modified the sheet metal mounting where the read relays, CDI unit etc are to extend the "shelf" section at the bottom. Folded up some sheet aluminum and flush riveted it all together and mounted by buss bar there.

I purchased the connectors online, I think "ballard motors sports" something like that.

I secured the leads using Adel clamps of the appropriate size and for the lead over the top of the engine I designed/3d printed some flexible rubber inserts that use the factory holes but simply have a small loop to secure a harness to.

what coils did you use.
I need to put mine in.

Denso 673-1301*

what did you do for connectors for the coils

sorry to hijack.

ballard motorsports