<p><span style="color: rgb(51, 51, 51); font-size: small;"><b>Nilight Trailer Plug Tester</b></span></p><p>Nilight trailer plug tester features 6 LEDs, a testing circuit for the tail lights, <span style="color: rgb(51, 51, 51); font-size: 16px;"> left turn signal, <span style="color: rgb(51, 51, 51); font-size: 16px;">right turn signal, </span></span>brake lights, reserve lights, and auxiliary power.</p><p>It works by plugging in the connector socket of your vehicle end.</p><p>Each of the indicator lights with clear labeling will tell you which of your towing vehicle lights works or don't. If the socket is getting power, the tester's various LEDs will light up.</p><p><span style="font-size: small;"><b>Function Codes:</b></span><br></p><ul> <li>BU: back up or reverse circuit center pole</li> <li>RT: right turn/brake</li> <li>T/M: taillights</li> <li>LT: left turn/brake</li> <li>BK: Brake controller output</li> <li>12V: 12-volt power feed</li></ul>
Confirm the exact year, make, model and trim before ordering. Send us SKU 50307T with your vehicle info and we can help verify fitment.
Shipping services and final delivery cost are shown at checkout. Returns are confirmed before an RMA is issued — parts generally need to be uninstalled, unused and in original packaging. Full policy.
