When I turn the switch on my F150, I hear a click, but then lose all electrical power....lights, horn, everything. Tried jumping to make sure battery was OK, then same thing happens. Without electrical power, I pull on the light switch...nothing. But when I disconnect jumper cables....lights, horn works, until the ignition attempt. Need help. Relay switch?

Kenneth Wetherington

Asked by Oct 05, 2014 at 06:41 PM about the 1994 Ford F-150 XLT LB

Question type: Maintenance & Repair

2 Answers


Sounds like a bad battery cable ground (-) connection. Starting at the battery check all your battery cable connections. They all need to be clean and tight. HTH. -Jim

Andrew Olsen

Battery cables. Do you have replacement leads on it? They need taken apart and cleaned often. Every 87-96 ford with the replacement ends do this. Idk why

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