Oldsmobile/Buick Repair: 1995 Buick Riviera Wipers Dont Work, 1995 buick riviera, buick riviera

Question
Checked the fuse and it's OK.  Dealer said the entire wiper motor assy needs to be replaced at $600.  Is there a basic troubleshooting sequence?  If not, if I don't care about intermitent mode, is there a way to wire it to work in simple on/off mode? Thanks for your time and help.  Walt

Answer
Hi
The yellow wire going into the switch should be hot (from fuse)
The purple wire at the module/motor assy should get HOT at high speed.
The other wires pink and gray should get hot (pink is delay, gray is low)
The green wire is off.
The red and blue turn on the washer pump.
black ground.
check for power on Purple wire with switch on high.
If so, the motor WILL need replacement.
If no power you MAY need the switch.
I can tell you I have changed more switches than motors.
I hope this all helps.
Good Luck
Pawl