1994 Sc400 Wiper And Heated Seats Problem

[sc400 Albany]

Hey guys. I have an electrical problem I have not been able to figure out for days. When I try to use my wipers and the heated seat on the passenger side, the "key has been left in the ignition" buzzer sounds. The wipers don't work, checked the motor and it is fine. Put a test light to each of the connectors for the wiper motor and get continuity when i cycle through the wiper speed and intermient switch on the steering column.

Driving me crazy. First I noticed the wipers not working at all. Then had a cold day two/three weeks ago and the wife tried the heated seats and thats when the buzzer sounded. Help is appreciated.