Having problems with your 2000 Ford F350 Super Duty Super Cab ?
My horn, radio and inside lights come on without the key in when it rains hard
It sounds like you are getting water intrusion into the circuit, probably into the fuse box. Check the fuse box for water intrusion, Pull the fuse block out of the box and check for corrosion on the back of the block. If there is corrosion then you are getting water into the box. find where the water is coming from and replace any weather seals on the truck or box. Also check to see if you are getting water through the windshield somewhere that could be running behind your dash.
Repair Help & Product Troubleshooting for 2000 Ford F350 Super Duty Super Cab
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