The Baja Designs Squadron 2.0 4-Pin Deutsch 2-Light Small Splitter (part 66-0004) is a compact branching accessory for the Squadron 2.0 auxiliary lighting line. The manufacturer describes it as a compact 6" 4-pin Deutsch 2-light splitter with backlight integration. It works downstream of a main harness: a splitter allows one main Baja Designs wiring harness to power multiple lights from a single switch or power source.
The case for this part over a generic T-connector comes down to platform matching. The Squadron 2.0 Pro pods use the same standard 4-pin Deutsch connector, which the manufacturer says improves wiring harness durability. Keeping the branch on that connector family, instead of improvised splices, keeps the backlight function intact through the split. If you are searching for a Squadron 2.0 Deutsch 4-pin splitter, a dual-pod backlight splitter, or a 66-0004 T-connector for an off-road light bar, this is the matched option. Capacity is the main planning point: the manufacturer rates it for a maximum of 2 Squadron 2.0 Pros or 5... Squadron 2.0 Sport lights when paired with additional splitter harnesses.
According to the manufacturer, the splitter supports up to two Squadron 2.0 Pro lights or five Squadron 2.0 Sport lights, the latter requiring additional splitter harnesses. Count your lights before branching further.
No separate feed is needed beyond the main harness. The manufacturer's design has the splitter branch power from a single upstream harness, so the switch and power source live on that harness.
The manufacturer's install sheet for the companion 64-0055 harness states that each lead can be paired with splitters and extensions to power up to 14A of lights. The manufacturer also advises reviewing all light and harness wattage and amperage before linking multiple lights together.
The splitter is a plug-in branch, so most of the wiring work happens in the main harness. The manufacturer's install sheet for the 64-0055 harness lists a wrench, a drill with bits up to 3/4", and pliers as the required tools. Disconnect the negative battery cable before making the positive ring-terminal connection, then ground the black ring terminal to chassis or the negative cable. Route the light leads to their mounting points and plug them in, pairing splitters only within the per-lead amperage limit. The sheet also calls for routing the switch lead through a firewall boot, which means separating it at its red connector, drilling a 3/4" hole for the dash switch, and reconnecting it. Some owners on the manufacturer's product pages have described the Squadron 2.0 Pro wiring instructions as vague, so have the install sheet and a reliable wiring reference on hand before you start.
