Hummer H3 Trailer Wiring Kits Towing a boat, a camper, your water toys? You need to get those trailer brake
lights and signals working with an Hummer H3 T-connector (sometimes
called trailer wire kits or wiring harnesses). If a custom wiring kit is available
for your vehicle, they simply plug in. If your H3 needs a universal wire kit
- those clip into your existing vehicle electrical system. A selection of towing
adapters & plugs may also be needed.
Get towing with your Hummer H3 Wiring Harness
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