I had to buy this extension as an afterthought because I didn't have enough wire (in the middle of a truck sized truck) by the time I had 95% of the kit installed. I installed a relay box next to the left front headlight where I had my seat. So if you don't mount the relay box next to the hub side of the firewall, your space to mount the actual switch panel is severely limited because you simply run out of cable length. This cable should not be an option but should be included with the Auxbeam switch panel.
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