I'm in need of any electrical schematics or any other "green book" info anyone might have on the 780 2.8L, 1988. I am sure they are on the net somewhere, that is why I'd hate to buy but if I have to I guess I have to. I already have TP31397/1-partial. Any help would be appreciated! I'm trying to restore my 780 but the wiring is burned up. Thanks again for any help.

Maybe try here, the Documents tab, they're trying to get as much as possible. But, how different is it than a 760, or even 740? What is it that's burnt?

http://brickspeed.net/

Thanks. I tried the link and there is nothing under 760. I'm not sure how much different they would be from a 780, but I believe the 740 didn't come with a V6 2.8L and I'm fairly certain the wiring isn't the same between PRV and Turbo. All the under hood wiring is toast from years of heat and being unwrapped so I'd like to get it wired up correctly - it took me years to even find a 780 in my area [that someone isn't trying to ask 8K for!] I'd attempt to find a replacement harness but I'm sure that is even harder to come by - and of course the B23FT harnesses are everywhere. Thanks kindly for your response.

Have the 780 wiring green book, send me an e-mail from my profile to get that part of the hand drawn schematic for the B280 wiring as the B230FT and B280 have differnces beyond number of cylinders, also an oitl temp guge in the drain plu, etc.. A 760 motor harness should be a good base to start and modify as needed from if yours is destroyed. May take a day or two as I find the book.