old-iron-habit
Senior Member
- Joined
- Nov 22, 2012
- Messages
- 4,233
- Location
- Moose Lake, MN
- Occupation
- Retired Cons't. Supt./Hospitals
My dump trailer has a green LED light in it that shows when the hoist battery is being charged from the tow vehicle. Neither my F350 or F550 charge thru the 7 pin flat blade connector. I know the trailer charger works because when I hook up the Chevrolet 1/2 ton the green light glows. The F550 has had the plug added and it does not have the blue hot charge wire at all. Is this simply a extension from the battery/alternator that gets shut off with the truck so it does not continue to pull from the truck battery when the 550 is not running? Any help in wiring this circuit will be appreciated. The F350 is all plug and play factory 7 pin RV plug so I am going to look for a blown fuse somewhere before I go any further.