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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 36027
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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I have a 1999 f350 every time ir rains the top.roof lighs

Customer Question

Hello i have a 1999 f350 every time ir rains the top.roof lighs leak and water gets in the cab, all.the dash lights and blower motor comes on by it self and kills the battery. If i reach up tje dash on left side and shake the wires the door looks and all dash flicker. Any thoughts
Submitted: 1 year ago.
Category: Ford
Expert:  Ron replied 1 year ago.

Hello and thank you for your question,

The most common cause for this problem your 1999 F 350 is in most cases is due to a leaking windshield seal on the left front top Corner and not the roof light, when the windshield seal leaks it allows water to run down the left windshield post and drip on the GEM/Fuse panel and when this gets wet it shorts internally and causes all sorts of electrical issue such as the ones you are having. The fix in most cases is to have your windshield resealed and that will in most cases solve this issue once the GEM/fuse panel dries out.