4 way trailer light converter required?

[pauldonis]

Has anyone with a 4 wire trailer setup (I have a converted boat trailer) had to install a 5 to 4 (??) converter, like one of these?

https://www.princessauto.com/en/4-way-tail-light-converter/product/PA0008465841


I seem to be getting voltage to all of the right places but the lights just won’t work.

Any suggestions would be appreciated.

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[Cruzer01]

Paul, suggest you try it using another trailer or with a magnetic set first. The problem may be with your trailer lights. Make sure it's grounded well. My 4 pin plug works without the adapter. Hope this helps. Good luck.

 

[pauldonis]

Paul, suggest you try it using another trailer or with a magnetic set first. The problem may be with your trailer lights. Make sure it's grounded well. My 4 pin plug works without the adapter. Hope this helps. Good luck.

Thanks for the info. It did turn out to be the trailer, and yes, it’s always a ground!

However, now with everything tested on the trailer I only get left/right and stop hooked up to the Mav. No running lights. This is where I’m wondering about the converter now…

 

[garryjohnson]

Same thing happened to me when I hooked up a friend's trailer to haul some trash for him. Small trailer with a 4-pin plug for lights. I had turn signals and brake lights, but no running lights. Turned out that the trailer had a fault which blew a 20 amp micro fuse. Replaced the fuse, tested and all is good. My friend had someone else repair his trailer (not a certified mechanic) and he forgot what the problem was (he's a few years older than me and I'm 67). We did hook it up again and everything worked correctly.

 

[pauldonis]

Thank you Garry I will check the fuse again as i had seen that come up on another post. I know the running lights test okay on the trailer so that could be it.

Also have a neighbour with a trailer to test so we’ll see how that goes!

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