Bought one of these as I wanted a 12 pin and two anderson sockets, its a great idea but badly executed. The unit has nice fat wires going in and looks the business, I had to take it apart to add some diodes and found that the fat wires connect to the 7 pin round socket but the wires linking across to the 12 pin were extremely thin (see picture) .My main concern was the blue wire that feeds the brakes, this can draw a fair bit of current especially with a heavy dual axle caravan, I considered this a big risk so removed the dodgy wiring and replaced it with suitably sized wires. It seems that the factory (China) are try to save a few cents on internal wiring, I contacted Onex and actually spoke to the owner, he seemed dismissive and said most auto electricians would rewire it anyway, to be honest I was annoyed at his attitude where customer safety was involved as a lot of these may be bought by DIYers like myself who would not necessarily look inside and just connect to the wires hanging out of the unit. If you have one of these and are using the 12 pin socket I strongly urge you to check the thickness of the internal interconnecting wiring for suitability.Read full review
Verified purchase: No
Great idea from combo plug - but needs refinement- The plastic holding the springs for the socket covers is very thin and will likely break after repeated use. One of the female pins on the 12 pin socket came out on the weekend when unplugging the trailer- went back in okay but suspect will need to change at some point
Verified purchase: Yes | Condition: New
The only Con I have is the small size or wires use to wire it up Can see me having to upgraded wire sizes, though that may be impossible to do.
Verified purchase: Yes | Condition: New
this pre wired trailer plug connector. makes wiring a trailer simple and sure
Verified purchase: Yes | Condition: New
I have 4 trailors with mixed plugs 7 round,7 flat,12 flat saves me having adaptors . Now can tow most trailers without the hassle very happy.
Verified purchase: Yes | Condition: New
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