Quote:
Originally Posted by whunter
This problem is one year old.
When first noted, it was only on cold days.
It is a Factory radio.
Hmmm.
A bad ground would explain multi unrelated circuit involvement.
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Old relays sometimes get wierd when cold.. until they get wierd when it isn't so cold. I don't have my electrical diagram with me, so I don't know if there's any relays in the wiper circuit that might cause it to behave this way.
Oxidizing connections are also sometimes affected by cold.. until they become affected when it isn't so cold. With these 20+ year old cars, that could be the problem with your radio. Have you tried pulling it and disconnecting/reconnecting it? That usually scrapes off enough oxidation to cause the problem to go away or change behavior for a little while.