This wiring harness is the easiest way to connect one or two driving lights or light bars to your vehicle. With fireproof cable conduit, a high-quality illuminated switch and waterproof Deutsch connectors, it is designed to last for many years even in rough conditions.This product comes with H3 and H4 high beam piggyback adaptors included.Contents 1x Wiring loom with fire-resistant sheathing 1x Illuminated switch 1x 12V relay 1x 24V relay 1x Inline 25A fuse 2x Scotch locks 1x HB3 piggyback adaptor 1x H4 piggyback adaptor