I bought a trailer hitch for my 12/2016 Model S and although it will be used 95% for my bike rack, I would still like to have wiring for my seldom-used trailer. I did a search here and found a number of posts on the topic BUT they were for model years pre-facelift and from what I could tell, wiring colors (and maybe even electronics) have changed.
In searching hitch sites, I did find a couple of 'kits' that were available for the 2017-2019 MS but they were ridiculous in price - one was over $200. I was hoping someone here with a newer MS might have successfully tackled this DIY project and be able to provide direction.
My trailer has a 4 pin connector with separate wires for right, left and parking lights. It has LED lights and I measured that the max current draw for brake lights plus running lights is only 350ma (turn signals are 130mA each [so for braking we are talking 2X that] and running lights 90mA).
The first question is whether there is something 'odd' about 2017+ vehicles in terms of wiring for the rear tail/brake lights (e.g. instead of single wires for parking lights, left turn and right turn they are doing something 'digital' on a wire pair).
If there is single wires for each, does anyone know the colors for each (past posts have shown the wire colors changed multiple times over the years)?
Lastly, if I do need some sort of 'isolation' device to separate the car from the trailer, do you know of an inexpensive generic one that isn't 1/2 the cost of the hitch ?
Thanks.
Thanks for any help.
In searching hitch sites, I did find a couple of 'kits' that were available for the 2017-2019 MS but they were ridiculous in price - one was over $200. I was hoping someone here with a newer MS might have successfully tackled this DIY project and be able to provide direction.
My trailer has a 4 pin connector with separate wires for right, left and parking lights. It has LED lights and I measured that the max current draw for brake lights plus running lights is only 350ma (turn signals are 130mA each [so for braking we are talking 2X that] and running lights 90mA).
The first question is whether there is something 'odd' about 2017+ vehicles in terms of wiring for the rear tail/brake lights (e.g. instead of single wires for parking lights, left turn and right turn they are doing something 'digital' on a wire pair).
If there is single wires for each, does anyone know the colors for each (past posts have shown the wire colors changed multiple times over the years)?
Lastly, if I do need some sort of 'isolation' device to separate the car from the trailer, do you know of an inexpensive generic one that isn't 1/2 the cost of the hitch ?
Thanks.
Thanks for any help.