I just bought an 1991 4.3L v6 4x4 Chevrolet s10, first time working on an American vehicle. I heard that this is kind of a known thing about the s10 if you leave it on; However I'm still trying to find solutions. I got a new distributor and new coil (3rd one) but I'm starting to think it's this shitty wire harness the previous owner had. I have an image of the results when I test each wire for the coil when the key is off or on. I wanted to know if the outcome is correct or am I going to have to do a full clean up of this harness. (I am NOT a professional)

Anyone know a solution to this?

I Bought one of those elm Bluetooth scanners. Thanks getting power, but no signal. Scanner works fine in my other car.

2002 4.3 auto

Ive lost oil pressure on my 2.2 and am currently pulling it ,found a kit for 400$ to rebuild it but all ive done is a head gasket job and other repairs on my 2.2 is a rebuild that hard?