Baja Designs' universal LP9/LP6/LP4 wiring harness is built to run up to four LP9, LP6 or LP4 Pro LED Lights from one feed, so you don't need a separate kit for each lamp on a light bar, roof rack, or rock-crawl layout. The manufacturer rates each lead at 11 amps / 140.8W, and LP-series lights operate on 12-36 volts. Compared with a two-light kit or a homemade splice, a harness designed for a four-lamp load is the purpose-built choice. The manufacturer recommends its two-light 64-0172 harness for safely powering two lights at a time, which makes a rated four-light harness the better fit for a full setup. Owners on user forums add that if a factory auxiliary system already has relays and fuses, the harness can be trimmed at the lamp leads to cut length and clutter.
Confirm the SKU before ordering. The manufacturer's 64-0325 configuration includes an on/off/on toggle switch to provide power to the lights, while the 64-0325-UP upfitter version includes leads to wire into the stock vehicle upfitter auxiliary switches. Because 640325 is not a number the manufacturer lists directly, confirm with the manufacturer which configuration matches before buying. For LP-series wiring, the manufacturer warns against powering pins 1 and 4 together, and its related harness instructions say to disconnect the battery ground before starting.
It depends on the SKU. The manufacturer's 64-0325 version includes an on/off/on toggle switch, while the 64-0325-UP upfitter version is designed to tie into the vehicle's stock upfitter switches. Confirm which one matches 640325 with the manufacturer before ordering.
No. The manufacturer says pins 1 and 4 should never be powered together, since this can damage the light's circuit board, and that damage is not covered under warranty.
Owners on user forums report that if the factory auxiliary system already has its own relays and fuses, the harness can be cut at the lamp leads, just before the converging relay and fuse section, so you only keep the length you need.
This is a multi-step wiring job rather than a plug-in swap, so plan for switch mounting, battery connections, and routing. The manufacturer's related LP-series Pro harness instructions call for a 10mm or ½ socket (Battery terminal size) and a 1/2" drill. Start by placing the vehicle in park, turning it off, and disconnecting the battery ground (-). For power sizing, the manufacturer's LP light sheet says wiring two lights calls for 12 ga from the power source and 14 ga from the split junction, so confirm wire gauge for a four-light run with the manufacturer before cutting wire. Keep all wiring away from hot, sharp, and/or rotating components.
