The Baja Designs 640167 is a lock-out wiring harness for LP9 and LP6 LED lights, made to work with power modules such as sPOD, Switch-Pros, and factory upfitter systems. Its central job is to keep the high-beam and low-beam circuits from being energized together. The kit includes dual relays and spliced leads for the backlight, low beam, and high beam, plus a positive and negative battery lead, but no switch, so you supply the switching from your upfitter circuit or power module. Owners on user forums describe it as a way to stop both auxiliary switches from powering the lights when both are pressed. One owner who installed it said the work was not overly difficult.
Fitment depends more on your switching setup than on a specific model. Owners on user forums say the upfitter harness suits Jeeps with factory auxiliary switches or an aftermarket switch panel such as Switch-Pros or sPOD. Vehicles without a factory auxiliary switch panel need the standard toggle switch harness instead. For the low-beam function, a 10A circuit must be used. Searches for LP6 LP9 lock-out harness, LP series high low lockout, and Switch-Pros aux lockout wiring tend to lead to this part.
No. The manufacturer lists no switch included and states that the harness itself is included, so you will need to supply your own switching.
It depends on your vehicle. Owners on user forums say that Jeeps without a factory auxiliary switch panel or aftermarket switch panel need the standard toggle switch harness rather than the upfitter lock-out harness.
Experiences vary. One owner on user forums said installation was not overly difficult, while another forum thread on a JL Rubicon install described the harness as not install friendly. The manufacturer's instructions cover crimped or splice connections for the upfitter wire.
The manufacturer's instruction sheet lists a circuit test light or multimeter, pliers, a 10mm or 1/2-inch socket for the battery terminal, and crimps as required tools. Route the light plug leads from the engine compartment to the lights, then mount the dual relays on an existing bolt in the engine bay away from heat and moving parts; the sheet notes no grounding is needed for the relays. Before connecting, test each upfitter wire's function, then make a crimped connection, or use a splice connector if crimping isn't possible. The main gotcha is the 10A low-beam circuit requirement, so confirm your fuse and wire gauge before wiring the low-beam lead.
