This H11 wiring harness kits included: 12V 40A relay module box, wiring harness w/ adapters, 15A safety fuse box, and 5 Pin LED indicator on/off switch. Efficient Protection: Efficient Protection: Adopted premium PVC and well materials,12V 40A Power relay and 15A inline blade fuse act as the first line of defense against overcurrent and short circuit.
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