I have a christmas tree with the lambda sensor controller and the engine bay sensors computer via a 3 amp fuse off the coil positive. Also reversing light and accuspark positive. Could do better...
You could see if someone like Vehicle Wiring Products has a terminal block for the push-on connectors.
Fit relay in engine compartment and small fuse box. Use original ignition feed to energise and split feeds to your coil etc through fuse box .waterproof versions are available !
Just fitted 3 relays and fuse box to power all the bits but they need a single Switched ignition , eventually doing away with the coil so trying to keep it tidy . I can feed from to coil but wondered if there was another .
Is this because you are wary about relying on single ignition feed? If so ,I suppose the only alternative is to run a dedicated loom to front end
I don't really want to run a cable front to back as when I loose the coil and dizzy it will be surplus
I've run a 40amp cable off the starter to all the relays and temporary switch off coil ... wiring is not my fortay.... coil has pertronix , rev counter , temp ... only doing it as I wanted to see AFR readings whilst still on dells .. as it's never been near a RR
You are still going to need a good ignition feed ,and the extras current draw will test the original set up. So to me it would still make sense to up grade ignition feed .