Need help to troubleshoot this please
It's a 1990 ram van b350 extended 5.9l

 

Jump the brake pedal switch

 

Of course you mean temporarily for the purpose of testing the switch, and not permanently.

 

Of course, without saying.

 

I am having same problem how do you jump brake light switch

 

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On a 1996 Dodge ram. 3500 van 5.9

 

 

This is how to jump it in a Chevy, but same idea.

 

Sorry, I couldn't resist.

Answer: To jump the brake light switch, you'd first locate the switch near the top of the brake pedal assembly and then short the two wires connected to the switch. With the wires (temporarily) shorted, the brake lights should illuminate. If not, then your problem is not likely to be the switch, but something else.