Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
13-Pin Trailer Socket
The backup lamps, continuous current and charging cable can be used on the trailer with the 13-pin trailer socket. A 13-pin trailer socket is recommended if a bicycle rack will be installed or a camper will be towed.
Pin assignment must conform to DIN ISO 11446:
- 1 - Left turn signal
- 2 - Tail lamps
- 3 - Ground for circuit 1 through 8
- 4 - Right turn signal
- 5 - Right headlamp
- 6 - Brake lamp
- 7 - Left headlamp
- 8 - Back-up lamps
- 9 - Terminal 30 (permanent positive)
- 10 - Terminal 15 (battery charging in trailer)
- 11 - "free"
- 12 - "free"
- 13 - Terminal 15/30 ground
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
No obligation. See pricing before you book.