Tow Bar Wiring Recommendation for a 2007 Jeep Liberty  

Question:

Expert Reply:

For your 2007 Jeep Liberty the tow bar wiring harness is the # HM56203, the # HM56204 is for the newer generation Liberty that starts in 2008.

To determine if you would also need the brake light relay part # RM-88400 (price at link below) you will need to answer the following questions:

Are you using a supplemental braking system that depresses the brake pedal in your towed car?

No - You do not need a brake light relay.

Yes - You may need a brake light relay. Continue on to the next question.


Do the brake lights on your towed car illuminate while the engine is off?

No - You do not need a brake light relay.

Yes - You may need a brake light relay. Continue on to the next question.


Do your towed car's brake lights act as both the brake signals and the turn signals?

No - You may need a brake light relay. Continue on to the next question.

Yes - Your towed car has a combined lighting system. You will need a brake light relay to ensure proper activation of its signal lights.


Does your towed car have separate brake lights and turn signals?

No - Your towed car has a combined lighting system. You will need a brake light relay.

Yes - Your towed car has a separate lighting system. You may need a brake light relay. Continue on to the next question.


Are you wiring your vehicle with a six-diode kit or a TowDaddy custom wiring harness?

No - You will need a brake light relay to ensure proper activation of your towed car's signal lights.

Yes - You do not need a brake light relay.

I attached a help article on picking out the correct tow bar wiring for a setup for you to check out as well.

expert reply by: Jameson C

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