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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 4384
Experience:  Owner at DJ Wilson
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Where is the switch brake lights on a 2004 387?

Customer Question

Where is the switch for the brake lights on a 2004 387?
Submitted: 8 months ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 8 months ago.

Hi Jim my name is***** with me while I look this up for you

Customer: replied 8 months ago.
Ok
Expert:  Daniel Wilson replied 8 months ago.

Click this link for the schematics for this model.

Schematics/Component locations

Expert:  Daniel Wilson replied 8 months ago.

The air pressure switch should be mounted high up near the air brake valve. It is a two wire switch. See PDF page 10. Will be a white and black wire. A281-1 , WHITE and 239-09 , BLACK Let me know if there is still trouble locating it

Expert:  Daniel Wilson replied 8 months ago.

For test purposes you can use a jumper across the two terminals to see if your brake lights then work.

Expert:  Daniel Wilson replied 8 months ago.

Hi, Did you get this resolved? Please remember to take the time to rate my service as that is how the experts get credit for their time helping on the site.

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