No start issue V12

[sbobev (Steve)]

I understand that stinkin’ wire is still there. In fact, IIRC someone told us it’s still in the same place in the engine compartment, with a new wire from the Marelli ECU in the footwell up to meet it.

Whether or not that’s true, the EFI ECU still needs a trigger signal. It’s something to look for.

IIRC, this topic has been covered multiple times, Kirby.
“Trigger” signal for the Marelli is generated by the Marelli ECU itself.
Takes CPS and flywheel signal inputs for that, here:

Then, the Marelli ECU in the passenger footwell, via pin #24 (shielded wire, not coax - shield on pin #7) send the “speed signal” to the EFI ECU in the trunk. Here:

I don’t think the “white stinkin’ coax wire” which we know for the AB14 box (the one that is the culprit behind the no-start of many Lucas cars) and the Marelli shielded wire can be put in the same category.

But I agree, given the fire history and given that replacement harness, this is another possible place in the harness where things can go wrong.