2 speed wipers and switches operate differently than a 3 speed wipers and switch. If you need to “drop” money on replacement parts after you bought a car then that’s what you have to do.
Looking at the original photo it looks like the harness was re wrapped with electrical tape telling me somebody has been in there. You may need to do a whole harness as who is saying the harness is the correct one for the car? We cannot tell that by a few pictures (trust me it helps ) as we are just goofy people who have been working on cars for a long (and short) time trying to help.
Syleng1
