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GOPJEW
Member
Hi GOPJEW,
Hopefully are cars are the same.
In the connector to the 7 pin trailer connector are 3 large wires.
They are brown 12V-negative, red 12V+positive, and yellow with a red stripe.
The yellow with the red stripe is the 12+positive output from the brake controller.
I need to know if you "extended" the wires from the 4 pin connector where you connect
the brake controller to the trailer connector.
By rights the positive 12V should be powered in the 7 pin connector without any action
by the car owner - It is supposed to be ON...
Again, all that I am using it for is to power the breakaway battery and a 5 watt interior
light in the utility trailer
Thank You,
Shawn
Hopefully are cars are the same.
In the connector to the 7 pin trailer connector are 3 large wires.
They are brown 12V-negative, red 12V+positive, and yellow with a red stripe.
The yellow with the red stripe is the 12+positive output from the brake controller.
I need to know if you "extended" the wires from the 4 pin connector where you connect
the brake controller to the trailer connector.
By rights the positive 12V should be powered in the 7 pin connector without any action
by the car owner - It is supposed to be ON...
Again, all that I am using it for is to power the breakaway battery and a 5 watt interior
light in the utility trailer
Thank You,
Shawn
just keep the car in the old camper mode, when in D don't push P to park but select the emergency brake from control panel
you can turn off HVAC and put screen into cleaner mode and lock the doors with the keyfob 20 feet away
keeps all 12V sockets on
aesculus
Still Trying to Figure This All Out
muleferg
Active Member
"All signals, lights, and brakes work fine. Just no 12 V+ out of the connector.
I am capable electrically and the power is just NOT in the connector."
My F150 while towing my Airstream has to have the lights at first click turn on for the trailer backup camera. to receive 12V.
The reason I use the F150 and not my X. we decided we wanted the 28 ft. When the Tesla pickup comes out. I will be selling the F150
I am capable electrically and the power is just NOT in the connector."
My F150 while towing my Airstream has to have the lights at first click turn on for the trailer backup camera. to receive 12V.
The reason I use the F150 and not my X. we decided we wanted the 28 ft. When the Tesla pickup comes out. I will be selling the F150
i tried this as well and it does seem to work. turned HVAC on via phone app and the rear 12V powered on and has been charging my scooter back there for the past 3 hours.
old camper mode works also but u have to have seat belt extenders to register someone in the front seat
Does this mean I have to have the heat or AC running the whole time if I want to power a little inverter or something during a power failure? Last week I had no power for two cold nights, but was saved by a 120 watt inverter and my Tesla's cigarette lighter so I could run my internet, an LED lamp, 50 Watt heating pad and internet. I had to keep closing and opening the trunk door via the app every time it shut off though.
How else can I have enough continuous or almost continuous 12 Volt Tesla juice so I can have 120 AC watts next time this happens? Hook the seatbelt and put something heavy on a seat or something?
-2018 Model X with tow hitch
For bigger power inverter, you can connect to the jump start post in frunk. It's fused at 80 amps, so you can use a 800w inverter. If you need a bigger one, you can connect to the 12v battery, which will give you 200 amp, you can use a 2000w inverter, make sure turn off HVAC to avoid overloading the DCDC converter, which is rated 2500w. But it may need to run HVAC to warm or cool the battery, so it's safer to use a inverter with 1500w or less.
Thanks for the help! Where is the jumpstart post? Is it always powered? What era and model did you hear about having that? My X is March, 2018 build - would mine even have a jumpstart post? I wasn't necessarily looking for more power, but powering my 400 Watt inverter would be a dream come true next time the power fails.
Here is an instruction:
I think he has 17 or 16 MX, mine is June, 2018 MX, so it has always been there.
He tested a 750w:
He said it is unfused, but it is fused at 80 amp, which should be good for up to 800w.
He tested a 750w:
He said it is unfused, but it is fused at 80 amp, which should be good for up to 800w.
I looked up the service manual, the jump post is directly connected to the 12V batter positive without a fuse. It is connected to the DCDC converter through a 250A fuse. So he was right, it is unfused.
FlatSix911
Porsche 918 Hybrid
Not sure where you are getting your data... the Tesla wiring diagram shows a 50A fuse protecting the 12V charging post
FlatSix911
Porsche 918 Hybrid
Can you post a copy of the diagram... I thought the jump posts were eliminated after 2016
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