Primelux PWH-02H4 Dual-Mode H4 Relay Wiring Harness - Heavy-Duty LED Upgrade Kit
Positive & Negative Switching | Dual Relay | 30A Fuse
Primelux PWH-02H4 Dual-Mode H4 Relay Wiring Harness - Heavy-Duty LED Upgrade Kit is backordered and will ship as soon as it is back in stock.
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The Primelux PWH-02H4 is a 12V relay wiring harness for upgrading two H4 headlights. It supplies fused battery power through two relays and supports both positive- and negative-switched headlight systems with the included adapter harness pack.
Positive- and Negative-Switched H4 Systems
The adapter harness can be configured for different H4 switching layouts, helping the relay circuit deliver stable power to both low- and high-beam functions. Follow the supplied wiring diagram for the vehicle's switching type.
Installation and Compatibility
Designed for 12V vehicles with H4 3-pin headlight connections. Before installation, confirm the vehicle's connector pinout, switching type and headlight power requirements. Disconnect the battery and follow the installation guide when routing and securing the harness.
Need help understanding switching types and the wiring diagram? Read the H4 relay harness wiring guide.
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