Question 1

Universal Towbar Wiring Kit

Accepted Answer

Universal wiring kits will provide all of the lighting functions required to keep your vehicle legal while towing your trailer or caravan. However they does not provide the additional benefits of vehicle specific towbar wiring.

Click here for the Steinhof 7 Pin Universal Bypass Relay Wiring Kit

Click here for the Steinhof 13 Pin Universal Bypass Relay Wiring Kit

Question 2

Towbar 7 Pin Electrics

Accepted Answer

Towbar 7 pin electrics, also known as 12N towing electrics are needed to power the lighting on a trailer, caravan, cycle carrier or anything you're towing. (The single 7 pin electrics power left and right indicator and taillights, fog lights and brake lights.) If you don't require any further power to your towing counterpart, the single 7 pin electrics socket will be your main choice.

Question 3

Towbar 13 Pin Electrics

Accepted Answer

Towbar 13 pin electrics are the most modern style of towing socket, all EU caravans post 2008 will be fitted as standard with a 13 pin electrics connector. The 13 pin electrics will power everything that a single electrics system powers plus reversing lamp, battery, power supply and fridge.

Steinhof Towbar (Fixed With 2 Bolts) For Mercedes C - class Estate, 2007 - 2014

€174.99

Item code: 3397210

To fit on mercedes C CLASS Estate

Delivery Only

In stock

Dispatch: Monday, 23 February, 2026

Special Buy: This is a limited edition offer, max 1 item per order and cannot be purchased with other items!

Specifications

OE Number

Overview

Steinhof Tow Bars And Hitches, Part No. M-134

Universal Towbar Wiring Kit

Towbar 7 Pin Electrics

Towbar 13 Pin Electrics

Safety and Product Information