Hello Lon Delaney,

I'm not actually seeing a question here... Nor make/model/year...

but I can easily deduce you are in wonderment how to meld these many wires... with your existing world (I suspect).

if you do NOT own your own drawings... (which I strongly recommend to anyone who is going to keep a vehicle for a while)... you can (highly likely) access some quite EXGUISITE drawings at BBB Industries web site. EULA (end user licensing agreements) need be settled (as with everything technical in todays world)... but their technical drawings & service bulletins are very well worth the exposure...

For your own sake... and any subsequent VEHICLE owners/users (or repair folks)... I would STRONGLY recommend you use
factory connector plugs and fully mimic your existing wiring where possible...

The AFTER MARKET APPLIANCE manufactures... support some makes...but (car manufacturers are deliberately EMBEDDING proprietary wiring into increasingly complex systems)...

Crutchfield supports it all...

Avail yourself of their expertise & custom equipment...
They were the ones that honestly told me my LINCOLN Navigator was a pretty ugly system... but I could indeed get a 3SIXTY3 unit to accomplish what I was after.

Good luck with yours.

See Crutchfield right here (below)...

Pioneer DEH P8400BH

BBB Industries Premium Alternators Starters Power Steering Products