Just so you know, the jumper cables are for testing only, not perminant. Keep the same size wire for everthing. Toyota didn't spend millions
in R&D for you to use a smaller wire especially with the coil & fuel pump. As far as grounds, make sure you have removed the paint & grim & it has a clean metal surface to contact
You can paint over it after you get the truck running. Ground the cab to the engine, the cab to the frame, the engine to the frame & the battery to the frame.
Make sure you soldier & heat shrink all your connections. Don't use butt-connectors, you will have problems later if not now!
