Re: New Guy
Hankstar-
I nave not wired a trailer, but I have tapped into the rear lamps wiring for other purposes. It will be necessary to remove the trunk finishing trim pieces (rear and left side) to access the wiring harness. Wire colors are:
Tail lamps - Brown
Stop lamps - Blue
Reverse lamps - Red
Left turn signals - Yellow
Right Turn signals - Green
Ground - White with black stripe
For ideas regarding how to route your trailer harness from the trunk to the exterior, look at how Toyota routed the wires to the license plate lamps. You could drill or punch a similar access hole and line it with a rubber grommet. Another option is to enlarge the existing factory hole (that is what I did to run wires for ultrasonic obstruction sensors and a reverse camera).
If you need more detailed instructions to remove the trunk trim pieces, and where to access the wires, I can post some pics.
Garym1j-
I suspect you received no rsesponses because your question is too general (what I call an "essay question", becase a small essay would be necessary to answer it). I suggest you ask more specific questions, such as "What are the pros and cons of the Satellite Navigation option?"
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