wipers wont work on 1999 Mazda B2500

I installed an after market head unit in my truck, after it was installed my speedometer, wipers, dash and dome lights stopped working.

by in Maryland Heights, MO on March 11, 2011
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1 answer
ANSWER by , March 11, 2011
In your truck, the speedo, wopers, dash gauges and dome lights, hood light, etc are controlled by the GEM (generic electronic module). I think you have a fuse blown or a loose connector related to the cylinder head work. check for stuff like that. You may need a Mazda/Ford specialist for help with this. To access the software in the GEM, you need a scanner so you may need to find a specialiist. I don't think there's any reason for the GEM to act up but rather that the thing's not powered up or something. If you want to find a specialsit, here's a directory link for you: