Fuse Size of Tekonsha 4-Way 118727 on 2020 Jeep Grand Cherokee
Updated 01/27/2026 | Published 08/17/2024
Question:
Hi. I had a question. My son bought a 2020 jeep grand cherokeee that has an aftermarket 4 pin wire harness. There is a yellow in line fuse holder in the engine compartment. What size fuse is generally used for this. It is yellow. Not sure if that makes a didference. Thx!
asked by: Kevin b
Expert Reply:
Hi Kevin,
I'm not quite sure of what a general fuse size would be, I can only give specifics on the 4-way we have for the 2020 Jeep Grand Cherokee, which is the Tekonsha # 118727. This 4-way uses a 15 amp fuse, and the fuse holder is also yellow like you mentioned, so it wouldn't surprise me if the fuse size is 15 amps in your son's case as well.
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Jerred H.
1/27/2026
Hey Kevin, did you find out if your son’s Jeep wiring harness also uses a 15-amp fuse like the Tekonsha one? Knowing what you discovered could help others sorting out similar aftermarket setups.