Reese Towpower 78116 7-Way Blade to 4-Way Flat Adapter with LED Circuit Tester<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Easily adapt OEM 7-way blade connector to basic 4-way flat connector</li><li>Instantly checks electrical circuit for connectivity</li><li>Displays connectivity using high visibility LED's</li><li>Built-in snap close dust cover is included</li><li>Vehicle end， Trailer end</li></ul></div><img src="http://ecx.images-amazon.com/images/I/413l4N22eHL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41KPC4nTQdL.jpg" noproxy>