By law, trailer lighting must be connected into the tow vehicle's wiring system to provide trailer running lights, turn signals and brake lights. This is
accomplished by tapping into the tow vehicle's harness power to the trailer wiring system. Connectors are used between the two to allow disengagement
when not towing.
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Various styles of connectors are available with four to seven pins to allow transfer of power for the lighting as well as auxiliary functions such as electric
trailer brake control, backup lights, etc. Choose a connector that has the required number of pins for the functions required. The male end is mounted on
the vehicle side and the female end on the trailer side.
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Round 11/4" diameter metal conductors are available that allow 1 or 2 additional functions such as back up lights and electric brakes.
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Additional pins for auxiliary power, trailer battery charging, etc. are available using larger 2" diameter, round connectors.
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