Plug Tester 7 & 13 Pin 12V Trailer & Vehicle Electrical

A 12V plug tester for checking trailer and vehicle towing electrical systems before heading out or tracing connection faults. Suitable for both 7 and 13 pin connectors, it gives a straightforward way to test common towing electrics without guessing where the problem is.

Used for trailer checks, caravan connections, towing setup inspections and general vehicle maintenance, this tow bar electrics tester helps confirm whether the vehicle socket or trailer plug is working correctly. Handy for drivers, mechanics, tow bar fitters and anyone dealing with trailers, it can save time when lights or other towing electrics are not operating as they should. It is also useful before long trips, after repairs, or when swapping between different trailers and vehicles.

The tester is made for 12V systems and works with both 7 pin and 13 pin formats, with adapters included to cover 7 to 13 pin and 13 to 7 pin conversion during testing. That makes it easier to check different towing setups without needing separate testers for each plug type. A 9V battery is required for operation and is not included, so it is worth keeping one ready in the garage or glovebox before use. For regular towing checks, the included adapters help cover common connector layouts and keep testing straightforward.

Trailer electric tester specifications

• Compatibility: Suitable for 12V trailer and vehicle towing electrical systems.
• Connectors: Works with both 7 pin and 13 pin plugs.
• Contents: Includes 7 to 13 pin and 13 to 7 pin adapters.
• Function: Used to check towing electrical connections on the vehicle and trailer side.
• Power: Requires a 9V battery for use; battery is not included.
• Indicators: LED indication for each pin.
• Test button: Yellow.

A practical choice for regular towing checks and fault finding.