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Well Semi-Great News, I had my some of my truck working for about 45 mins yesterday....MaxiFuse#5 feeds the BeCM...it was only putting minimal voltage to it. I replaced it and I had HVAC and radio,etc then it quit again. When I shorted that wire before, It started to blow that fuse and that's why everything went dead....Just now it's doing it again and I think it's fuse 7 or 8...I cannot get to them now but will tomorrow. My windows I think it's the switch pack,etc....I cleaned all the grounds to perfection and put dielectric grease on them, near the coolant tank under the hood (where they were all kinda not real good)...Good call on that as I'm sure that is contributing to all these issues. Oh, P125a, is Range Rovers coding for the engine fusebox, as is Z238 is the BeCM module, etc....They have everything coded for universal identifaction through it's product line....Everything, connectors, splices, grounds, it's pretty neat how it all works, even though I have been trying to study/learn the schematics you sent me, it's a lot to take in. Gotta roll, goodnight and Thanks again for all your help Mr. Repair1014U! Brian....Also, don't you at least have a real 1st name? It's not like I'm some mad computer genius hacker guy, Kidding!
Let me know if you have any trouble.
Thank you Brian and I hope you have a great weekend.
I am here if you need my help