umbilical wire color coding
Is there a drawing showing the color coding for the trailer plug wiring on a 2005 Cardinal fiver
Forum Discussion
It seems counter intuitive but I would never go by the diagrams for wire color alone. Use any search engine and type in "7 blade rv wiring diagram" click search and then click on images at the top of the search window. you will see many different wiring variations.
As a teenager I sold a boat to a guy and helped hook up the trailer to the truck. His 4 pin used the bare ground pin as 12v positive running lights.
Back in November I helped my neighbor replace the 7 pin on his flatbed trailer. The wire colors did not match either of the diagrams. Yes the wires went to the correct places for the plug, but the colors were wrong.
Bottom line, if you have and know how to use a multimeter, I would do two things.
As a teenager I sold a boat to a guy and helped hook up the trailer to the truck. His 4 pin used the bare ground pin as 12v positive running lights.
Back in November I helped my neighbor replace the 7 pin on his flatbed trailer. The wire colors did not match either of the diagrams. Yes the wires went to the correct places for the plug, but the colors were wrong.
Bottom line, if you have and know how to use a multimeter, I would do two things.
- Check in the junction box to verify the wire colors are the same on each side of the crimp or wire nut (ie. yellow wire connected to yellow wire etc). Make note if they are not.
- Make sure the wire colors on the diagrams match your old and new plug. Use your multimeter in continuity mode to verify that the pins on the plug are the correct color at the trailer end. It only takes a second and can save some headaches troubleshooting.
