【PURE COPPER】The outer skin of the 7 pin trailer connector is made of high-quality PVC. Terminals and cores are made of 100% pure copper. Pure copper 7 way trailer cord has better electrical conductivity. High conductivity ensures quick response when switching car turn signals and brake lights while the trailer is in motion. Pure copper 7 wire trailer cable are safer and last longer 【TRAILER WIRE APPLICATION】Trailer wiring harness kit 7 pin trailer plug wiring harness is suitable for trailers, campers, food trucks, dining trucks, caravans, RVs and other towing vehicles. For example: trailer 7 pin wiring harness is used to control brake lights, turn signals, reversing lights, tail lights, etc 【REILABLE TRAILER PLUG】Gubrdfrsod 7 blade trailer connector trailer plug uses high-quality pure copper double prongs instead of poor single prongs. Double-pin plugging and unplugging are stronger and provide better contact. The 7 wire trailer light plug comes with a dust-proof and rain-proof PVC plug cap to ensure that the copper terminals of the 7 way trailer wiring harness kit plug are protected from dust and rain 【EASY SPLICING】This 4 Feet long trailer cord 7 pin trailer plug comes with 7 RV standard color-coded wires suitable for most standard trailer wiring, but as there are some differences between trailer manufacturers, please check gubrdfrsod 7-pin trailer plug is ideal for your trailer before.to avoid errors 【WIRE GAUGE】The 7 pin trailer cord built made of 10-14AWG standard pure copper wire; black and white wire made of 10AWG; blue wire made of 12AWG; brown/yellow/red/green wire made of 14AWG; Soft and rugged PVC sheathing 7 pin trailer wiring harness plug for outdoor use.get easily upgrade the corroded old 7 pin trailer cord wiring on your trailers, caravans,RVs, food vans, campers and other towed vehicles 【PRE SALES & AFTER SALES SERVICE】If you have any questions about our gubrdfrsod 4 ft 7 pin trailer plug heavy duty trailer connector or you are not satisfied with the 7 pin trailer cord you receive, please contact us in time Gubrdfrsod Heavy Duty Pure Copper Gooseneck 4 FT 7 Way Trailer Wire