Nitrous plumbing A1A...??..

Cope said
That sound like the ticket for the wire path.

My one thought is (if it were my car or job) i would think about not daisy chaining the power to the retard box. I would probably want the to have its own hot or at least the hot that feed the ignition?

I would not trust all those parts and connections in front of such an important part. If the retard fails maybe bad things?

My thought is just build the system with worst case scenario planned in.

You are as always, doing a fantastic job.

I thought about putting the retard in right after the button to make sure it gets juice first, but then again I thought after all the safety devices, but maybe it's the biggest safety device and it should get juice right after the button. (That was a long sentence LOL) yes I think you're right let the retard get the juice along the way to the low pressure switch from the button. That way I can just disconnect at the low pressure switch and test and set the retard...