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I am looking at the connector on my f250 with a (custom)
class III hitch. It is a metal cylindrical female insert design,
has 4 pins in a square arrangement.
I suspect that is out of date. I've seen trailers with electric
brakes for example that appear to require a metal
connector with more pins.
At a bare minimum I would like to be able to connect that trailer
to my truck.
What is the best connector I should get? What is the best
metal insert style connector I should get?
[All my hitches were installed by a welding shop that
suddenly closed down just after I had the work done.
The actual welds are OK but I am beginning to
suspect that they were unloading old connectors on me
(grrr)...
I know what you're talking about. Yes they are old but you should be able to find one. If you want the 7 pin plug like most RV type trailers have you'll need to change plugs. Plastic or metal both work well. You can buy them at Wal-Mart or any autoparts place. You can buy an adapter to change the round 4 pin to a flat 4 pin if you want. look here: http://www.campingworld.com/browse/s...7&skunum=12077 Most utility/boat trailers use the flat 4.
I suggest swapping in a metal 7-blade connector from U-Haul. That's the only place I've found the metal ones, and a male-female pair is only ~$25. From the 7-blade, you can commonly find adapters to 7-pin, 6-pin, 4-round, or 4-flat, which makes the 7-blade the most versatile. It also carries more current than most others, so you should never have any problems, but it's also the easiest to clean. Since most trailers have 7 wires or less, you'll have all the circuits you need for anything you want, and you can just adapt down to whatever the trailer has, or swap a 7-blade onto your trailers and add extra circuits (like a boat battery charger or utility trailer lights).
Just be sure to stick to the standard wiring pattern no matter what you do.