If it isn't a straight 6 you will have to find the casting number on the back of the block with the year and date. Most likely its a 283.
Need to know if you have a single speed or two speed wiper motor.
Need to know the model year Chevy S10.
Many Chevy motors will interchange, need to know what you have in mind.
Need to KNOW the year and what it came in from the factory.
Need to know what engine you have.
Need to know engine size.
We need to know what engine you have to answer that.
Need to know the year.
need more info. what year what motor?...factory motor or rebuld and what wires are you wanting to know
Oldsmobile used Chevy 305's. 76 350 rocket 77 305 Chevy
There is a fuse for the blower motor on the fuse panel, I do not know of a relay.
We need to know which motor you have to answer that question, It could be the 2.2L or the 4.3L engine, it makes a big difference.