7 Point Wiring Harness | etrailer Install a 7-way, RV-style trailer connector on your vehicle with this easy-to-splice harnessLite draws power directly from the battery to avoid overloading your vehicle's circuits. Brake electrical system Includes harness with 4-pin connection point for plugging in a brake controller wiring adapter (sold separately) Supplies required fuses, wire taps, and additional hardware Constructed Amazon: 7 point wiring harness wwwon›Search›7 point wiring harnessAmazon: 7 point wiring harness. Skip to main content. Tekonsha 118286 Tow Harness Wiring Package (7-Way) by Tekonsha. 5.0 out of 5 stars 1. $68 $ 68. 80. FREE Shipping. Only 2 left in stock - order soon. DZG D2 Metal Socket Adapter Connector Wire Wiring Harness Converter for Ballasts HID D2R D2S D2C Bulbs-2 Pack.