Typically,
the top light will have the amber lense with only the signals.
The bottom lights will be the brakes and parking lights. It
isn't necessary to add any wires to the system if the brown and/or blue
wire to the rear are is not used.
- Disconnect
the wires going to the tail light (trailer) relay. You might
as well leave it in place for "legacy" compatibility.
- Cut
the brown wire where it comes out from the (dash harness) connector.
For extra length, strip the covering back from the harness a
bit.
- Connect the brown wire to the red wire that
was connected to the trailer relay input.
- Add
yellow and green wires between the 4-way junctions and the fuses (where
the old relay connected).
- At the rear, add jumpers
from the brown wire to each lower tail light (bright filament
connector). Keep the red parking light wire.
- Remove the
red parking light wire from the top (amber) lights, leaving only the
yellow and green.
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