Flat Towing Lighting Recommendation for a 2004 GMC Sierra 1500

Question:

Hello, My 2004 GMC Sierra Ex-Cab 4wd 1500 is flat towable per owners manuel and other reference material. I am going to use the Blackhawk All Terrain 10,000 lb bar, and bracket kit 3115-1. My coach has air/hydraulic brakes. What other kit or parts will I need for the lights etc? Oh , yes I want to use The Brakemaster as well with seat bracket 88158. I see others talking About relays, diodes, brake switches . Please advise. Thanks,

asked by: David P

Expert Reply:

Sounds like you have your flat towing setup all worked out with the exception of lighting. I attached a help article that covers the different lighting options available with the pros and cons of each.

For your 2004 GMC Sierra 1500 I would go with the Hopkins Custom fit harness part # HM56101 as this will basically just plug in line with your truck's taillight wiring to allow your tow vehicle to control the taillights.

expert reply by: Jameson C