In the trailer wiring diagram and connector application chart below use the first 5 pins and ignore the rest. By law trailer lighting must be connected into the tow vehicles wiring system to provide trailer running lights turn signals and brake lights.

7 Way Rv Blade Wiring Diagram H1 Wiring Diagram
Wiring diagram for 7 blade trailer connector. If you dont follow this your trailer or tow vehicle cant be used with any other implement. 7 way round plug lets you connect your trailer to the 7 way round blade connector of a tow vehicle interlock system locks in place to keep connections secure over sized finger tabs. Over sized finger grips for secure disconnections. 7 blade trailer wiring diagram wiring diagram is a simplified satisfactory pictorial representation of an electrical circuitit shows the components of the circuit as simplified shapes and the skill and signal links amongst the devices. 7 way rv blade connector wiring diagram 7 way molded trailer connector cable black blue red brown white yellow trailer end as viewed from front face of 7 way connector with molded on cable. Wiring in bed trailer wiring 12 volt power to a switched ignition source on a 2004 chevy silverado.
Wiring a 7 way trailer connector if existing wire colors dont match. Like a t connector an original equipment wiring harness plugs into the uscar socket without any cutting splicing or soldering required and it provides a standard trailer wiring output such as a 4 way flat or 7 way rv blade. Trailer electrical connectors come in a variety of shapes and sizes. Green 7 w a y w i r e c o l o r wire color gauge white 10 gauge blue 12 gauge green 14 gauge black 10 gauge red 14 gauge brown 14 gauge. Use the 7 pin connector anyway see below and just leave out the last 2 wires. If your truck has a built in 7 pin socket but you only need 5 of the pins.
The center connector on a 7 blade plug is for auxiliary in case you want to keep the fridge going while on the road its always nice to arrive to your destination knowing you have a cold drink waiting for you. The basic purpose remains the same whether your truck and trailer is using a 4 way 5 way 6 way or 7 way connector. 7 way wiring diagram for colors yellow white red green blue brown and black. 7 way round plug lets you connect your trailer to the 7 way round blade connector of your tow vehicle. There is a standard method of wiring a 7 pin trailer connector. Heres an illustration which may help guide you through the wiring process for a 7 blade trailer harness.
How to install 7 way metal trailer connector and wiring harness for a 1999 jeep wrangler. Interlock system keeps connections in place. Hopkins 7 blade trailer wiring diagram wiring diagram is a simplified all right pictorial representation of an electrical circuitit shows the components of the circuit as simplified shapes and the gift and signal friends in the middle of the devices.