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Today on this 2004 BMW X3, were going to be installing the Curt 4-pole Wiring Kit, part
number 56146KIT. First, were going to remove the spare tire, jack assembly, and battery
cover door. Next, well remove the fasteners and secure the rear threshold. Now, we can
go ahead and remove the two interior side compartments behind both tail lights. As you
can see, this now exposes us to the manufacturers rear tail light wiring. Now, we can go ahead
and use a piece of wire in the test light to identify the manufacturers tail light wires.
To make this connection, well use the quick connectors that come with our install kit.
The tail lights or running lights will be the purple wire which will connect with the
brown wire of our converter box. Well need to identify the turning signal, which in this
case is going to be our blue wire and we'll connect it with the yellow wire from our converter
box. And the black wire with the green tracer will be for the red wire from our converter
box. Now, I'm going
to go
ahead
and take
some black electrical tape and wrap
up
the connection.