For spiel1, I would still look to see if the flasher is drooping in its socket, especially after the opening-the-hood comment.
For CentreAg, if I read your comments correctly, you had no signals, but with the new flasher, the right side works. That is proof there is something different between the old and new units. As my Chrysler trainer used to say, "we not only sell you new parts, we sell them to you pre-broken". It's very common to find new parts that don't work due to all the unreliable electronics in them. I would try another new flasher.
Wipers turning on when you hit the signals is a mechanical problem, but there was a real common issue with the switches causing "phantom wipe". That was where the wipers would make one swipe for no apparent reason. It was caused by the Body Computer misinterpreting the values of various resistors in the switch and thinking you had selected the lowest delay setting. Isn't it amazing how the engineers can take an inexpensive, simple, reliable circuit, and add an unnecessary computer to it to cause all kinds of expensive problems? I autopsied one thinking I could measure the resistor and change it, but it's just a carbon trace on the circuit board. There's no where to solder a replacement onto. The only fix is to just replace the switch. It actually has three part numbers on it from the supplier. One is Chrysler's, one is Toyota's, but we never figured out the third one.
Tuesday, January 26th, 2010 AT 3:10 PM