Check your ground circuit in mV anything over 100mV on a loaded (operating circuit) is to high. So i would put a volt meter at the wiper motor ground and turn them on and watch. You might set your meter on max/min to catch something quick.
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Still havent had a chace to check the ground circuit but I noticed (or aleast I think this is whats going on ) that at startup my volt meter reads about 12 volts. Only after I drive about 50 feet does the meter move up to 14 volts. At this time my 2/4 wheels selector flashes. I think the meter moves to 14 around the same time the light flashes. I think this is happening at the same time but it does not happen enought for me to watch it. If the truck has been started I can'r duplicate it. What should my volt meter read and is it normal to start at 12 and slowely move to 14 after a minute or two?
