Trailer Wiring--Clueless

[jimsaxman]

I have a small cargo carrier that I am trying to connect the light array using an adapter to accomodate an 4-in-line plug to a round 4 pronger. I admit I am virtually clueless when it comes to electrical work, but I do know how to read and what I am seeing is to check the modulite with a circuit tester. Well, I have no idea where (or for that matter, what) the modulite is or the convertor box either in my 2004 Georgetown 370xl. Does anybody know where these things are so I can test them? Or even better run me through some trouble shooting procedure. I can't use this trailer without those lights that's for sure.

[Iggy]

Originally Posted by jimsaxman

I have a small cargo carrier that I am trying to connect the light array using an adapter to accomodate an 4-in-line plug to a round 4 pronger. I admit I am virtually clueless when it comes to electrical work, but I do know how to read and what I am seeing is to check the modulite with a circuit tester. Well, I have no idea where (or for that matter, what) the modulite is or the convertor box either in my 2004 Georgetown 370xl. Does anybody know where these things are so I can test them? Or even better run me through some trouble shooting procedure. I can't use this trailer without those lights that's for sure.

Maybe this will help.

[puff]

Can you post a picture cause it sounds like its going to be a custom job by you..!

[coupevillefish]

I did this on our 2004 GT standard round 4 to flat 4 for our tow dolly using a commercial adaptor. I found the wires were mismatched. I took both apart and changed connectors on the GT side so they matched the connector. All is well.

[jim44646]

i found this tester very helpfull.
Four-Way Trailer Light Tester

[etcmss]

a standard 4 pin plug wiring should be like the attached---found with bing search of "4 pin trailer diagram", search for power with brakes and turn signals on-off or with resistance checks.

[Dave_Monica]

Don't forget to check the wiring ground on the trailer itself...that's the problem a lot of the time.

Dave

[KyDan]

Originally Posted by Dave_Monica

Don't forget to check the wiring ground on the trailer itself...that's the problem a lot of the time.
Dave

X2 make sure the trailer ground wire is firmly connected to the trailer frame!

[jimsaxman]

Yes, the trailer ground wire is firmly connected to the frame. Thanks for the diagrams. Sure enough, my round plug looks like the one etcmss posted. Just went out and got a circuit tester (continuity [!] tester). Going to test the individual plugs and the dedicated fuses associated to see where that leads me. I also am entranced by the suggestion that the various circuits my be mis-wired. So that is a possible track to follow. Thanks for all your help. Most appreciated. By the way, I'm still wondering what and where I can find the "modulite". This is mentioned as a item to check for a pulse.

[Flying dutchman]

Don't know if this is the one you are looking for


http://www.amazon.com/Tow-Ready-1191.../dp/B001P2DULI

[jimsaxman]

Thanks, Dutchman, I'm looking at it but I still don't know what it does. No, I'm sure I don't need one of those (at least I hope not). At any rate, I solved my problem: It was a fuse! My newly acquired circuit tester found the offending culprit and suddenly I'm getting power to my plug. Success! I'm on the road--so be careful. Thanks to the community.