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Putco heavy-duty H4 wiring harness with relay routes power directly from the battery to increase headlight output while retaining use of the factory switch. Built with heat-resistant components and hard-insulated plastic plugs, it protects connections when used with higher-wattage bulbs. This harness simplifies replacement of original plugs and offers a straightforward installation for compatible H4 applications.
Putco H4 - 100W Heavy Duty Harness & Relay Wiring Harnesses
