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Parts Needed to Install 4-Way and 7-Way on 2018 Jeep Grand Cherokee  

Question:

I am installing a 4 pin wiring hardness on my wifes 2018 jeep grand Cherokee. We will be renting a RV with a 7 pin harness. I need converter from 4 pin to 7 pin and want to make sure I have a correct product. FYI- I plan to order the Tekonsha Code 118727 wiring harness

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Expert Reply:

The trailer wiring harness # 118727 is the correct harness for your 2018 Jeep Grand Cherokee.

Now if your trailer does not have brakes all you would need is the part # 37185 as an adapter to convert the 4-way to a 7-way.

If you do have trailer brakes you would need the # ETBC7 instead of the # 37185 and a brake controller. This kit comes with everything needed to wire up the 7-way and install a brake controller. Like the Brake EVN # TK63VR.

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Jameson C
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Instructions for ETBC7Instructions for TK63VRInstructions for 118727
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