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Moparmike

2000 rd688s no brake lights

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Ok guys truck had brake lights this morning now tonight none..no power to light switch on firewall..is there a relay in the cab or fuse..got dark on me so I didn't get to check alot of things like I wanna get to..all other lights work just no brake lights..thanks in advance 

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There is a fuse.

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The light switch is probably in the cab,look over and around by he clutch pedal 

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Ok thanks ..I replaced the 2 on the firewall does the 1 inside look like the 2 I replaced..airline and 2 wires going to it..

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Ok guys I'm really at a lost here ..I've changed out the 2 on the firewall 1 in the cab still no power..anybody know the location of the fuse inside the cab..or relay that controls them..I still have no brake lights..no power on firewall when pressed or even when I start the truck for the first time to let air build..thanks

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You have a small, fused, power distribution mod on the firewall near steer column? Check the main power lead and wiring behind front housing of box for corrosion.  

Edited by Mack Technician

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