

So when he hooked it up Pos-to-Neg & Neg-to-Pos something Happened, The only info I could find about when this happens if to replace a Certain Fuse, but the video I saw was for a Much newer vehicle
Any Help would Be GREATLY appreciated,
I've only ever Own Toyota 4runners (1983~2004) Jeeps (1973 360 AMC) and one Subaru Legacy (2000 Right Hand Drive), so I literally know next to nothing about these types of Vehicles.
He's been a Mechanic for a LONG time, but he just never really had a problem like this and Electrical isn't his specialty.
Thanks in Advance for the help, this is like the 5th car forum I've Posted to.
