Compatible with both 7 and 13 Pin connectors and with a reverse light check, the Proline Trailer Light Tester makes it easy for you to test your lights with just one touch to start the sequence - and with just one person! Complete with adapter and charger, the unit boasts an auto shut-off and now comes with an earth terminal and automatic reset. - Compatible with both 7 & 13 pin connectors - Reverse light check - One touch sequence test/single check - Comes with charger and adapter - Built-in battery complete with low battery indicator - Turns off automatically - Earth terminal & automatic reset - Maxmimum output 42W
eBay