EASY TO USE - The simple design of the adapter makes it easy to use, and it can be quickly and easily plugged into your vehicle's socket and your trailer's plug.
eBay
JOYROOM Bluetooth 5.4 Aux Adapter for Car Dual Mics Bluetooth Receiver Plug and Play for Car Hands-Free Call Auto Music Stereo
Aliexpress UK
GADLANE 13 to 7 PIN ADAPTOR allows connection of a trailer fitted with a single 7-pin plug, to a tow bar fitted with a 13-pin socket, Simply plug in and go! SECURE - This 13 pin to 7 pin towing adaptor, creates a secure connection between your vehicle and trailer; connecting the signal lights of your vehicle to the trailer.
eBay
WIFI 6 Network Signal Reception Mini Driver-free Wi-Fi Adapter for PC Deskop Computer 2.4G Network Card USB Plug and Play
Aliexpress UK
Converts the 13-pin socket on your car to the 7-pin female socket. PIN 1 - Yellow Wire (Left/H Direction Indicator). PIN 4 - Green Wire (Right/H Direction Indicator). Supplies power to your towing and truck.
eBay
2 In 1 USB Bluetooth Receiver Transmitter Car Bluetooth 5.0 Audio Adapter TV Computer Wireless Bluetooth Converter Plug and Play
Aliexpress UK
13 pin plug (car) to Twin 7 pin N & S Type Socket (trailer / caravan). Brass electric shock: brass is used as a conductor, which is more conductive than ordinary materials. Plug and play design, insert into socket, twist and lock, no need to change any cable.
eBay
150Mbps USB WiFi Adapter 2.4G Wireless Network Card Mini Signal Receiver USB Dongle Plug and Play for Desktop Laptop PC Windows
Aliexpress UK
This adapter converts the 7-pin socket on your car to the 13-pin female socket. 1pcs of 7 to 13Pin Towing Socket Converter(Other accessories are not included). Supplies power to your caravan, towing and truck.
eBay
Mini USB WiFi Adapter 150Mbps, 2.4GHz Wireless Network Dongle for PC/Mac/Linux/Set Top Box, 802.11n/b/g Plug & Play
Aliexpress UK
Easily connect your trailer or caravan with this13 to 7 Pin Towing Socket Adapter, designed for12V towing systems. This converter transforms your vehicle’s 13-pin socket into a 7-pin female socket, ensuring full functionality of essential trailer lighting and electrical signals.
eBay
Goelely RJ45 1000Mbps External Network Card Type C Port 4K Fire TV Stick LED Indicator Plug & Play Ethernet Adapter for Smart TV
Aliexpress UK
Converts the 13-pin socket on your car to the 7-pin female socket. PIN 1 - Yellow Wire (Left/H Direction Indicator). PIN 4 - Green Wire (Right/H Direction Indicator). Pin1 - Yellow Wire ( Left Indicator ).
eBay
WIFI 6 Network Signal Reception Mini Driver-free Wi-Fi Adapter for PC Deskop Computer 2.4G Network Card USB Plug and Play
Aliexpress UK
This adapter converts the 7-pin socket on your car to the 13-pin female socket. 1pcs of 7 to 13Pin Towing Socket Converter(Other accessories are not included). - Supplies power to your caravan, towing and truck.
eBay
2 in 1 USB Bluetooth Receiver Transmitter Car Bluetooth 5.0 Audio Adapter TV Computer Wireless Bluetooth Converter Plug and Play
Aliexpress UK