2005 Mazda 6 Hitch Wiring | Harnesses, Adapters, Connectors wwwd››Trailer Hitches›Hitch Wiring›Mazda›6Mazda 6 2005, T-Connector 3-Wire System with Powered Converter by CURT®. For Models without Tow Plug, 3-wire System, Location: P3/P4. This provides all you need to connect a trailer to the tow vehicle. 2005 mazda 6 harness | eBay www›Search›2005 mazda 6 harnessFind great deals on eBay for 2005 mazda 6 harness. Shop with confidence. Skip to main content. eBay Logo: Shop by category. 2005 MAZDA 6 COMPLETE DASH WIRING HARNESS GN3E-67-030-B OEM. $125. From Canada. Was: Previous Price $149. Buy It Now. Free Shipping. 16% off.