We have just purchased our 1977 Sovereign 31 Center Bath to do a full renovation. Our first task is to get it safely home from Clarksburg, WV to Tallmadge, OH (about 215 miles). The trailer was lived in and used as an extension to a home for 10 years by the PO who passed away and left it to the gentlemen I have purchased it from.
A few things that I'm planning to do are these:
1. Replace Tires/Wheels with ST225/75R15's since the current ones have been sitting for so long. I'm replacing the wheels since that just makes it easier, since we're trying to do a 1 day (Sunday) move and it was too difficult to arrange to have them mounted, balanced, etc.
2. Repack the bearings - who knows when they were done last. I don't need to lose a wheel on the trip home.
3. Check condition of brakes, etc., while I'm in there.
4. Get signals connected to TV.
This last part I need some assistance with. One key element that has not been located is the umbilical/pigtail cord to connect to the TV. So, I need to replace this. The trailer, of course, has the 7-pin connector (for which I have the pin-out). The TV has the 7-blade connector.
What parts do I need to create this cable or would there be one already available for purchase that I haven't found?
Is there anything else I should check out before the trip home?
I'd go with the temporary light bar per DanB personally. I spent over an hour trial and erroring crossing wires, etc. (I did end up toasting at least one circuit breaker in my TV) and it was still not right but was able to get turn signals & brake lights working properly which is all I needed since it was a day-time tow. I'd personally make sure you have the ability to have trailer brakes and also that the break away cable is connected and - to the extent you can - working. The 31' trailer will add the need for braking significantly. If you have not towed a trailer before, no big deal, but maybe find a parking lot to test out braking & stopping, turning, and backing up.
Hmmmm. The temporary light bar is a tempting option. I was looking into them and didn't want to put out the money for the, hopefully, only time I would need it. The truck I will be using is all set up to control the trailer brakes, provided the trailer brakes are in working condition. I'm also letting my seasoned truck driver friend do the towing, rather than making a 200 mile first-time. :-)
The umbilical/pigtail cord can be bought at some RV supply stores, auto supplies, and trailer stores. The 1977 Sovereign 31' center bath wiring diagram shows the pigtail attaching to the inside front wall on the drivers side. My 77 Argosy attaches to a 7 fuse block on the drivers front corner under the gaucho sofa and the pigtail wiring diagram also shows a fuse block on the 77 Airstream.
Attached is a pdf of the basic 12v wiring diagram and a jpg of the original pigtail wiring. You can find modern pigtail wiring diagrams online and rewire accordingly.
You are all so helpful! As for wheels and tires, I already bought a set, so I'm covered there. For the wiring, I have all of the necessary wiring diagrams. I ordered a new 7-blade pigtail and a 7 pin connector. So, as long as the wires are good internally, I should be good. I'm just praying the trailer brakes are functional.
I would take the drive up to Lorain/LaGrange, but I don't have the time to do it this week and we're doing the big tow Sunday morning. I'm sure that as we go through our renovation, that we will be able to use advice and help and I'll definitely contact you locals!
Your diagram and chart have helped a lot. I bought the VTS Standard cable and have connected it as you documented. There are only a few concerns.
1. The wire you marked as ORG is actually RED. Their diagram shows the color orange, but labels it red. Go figure. No big deal there as I verified everything and I'm fairly confident in that one
2. Despite all documentation, there is no PURPLE wire. There is a BLACK one. As long as those are synonymous, I'm fine.
3. My main concern is that the docs claim that the WHITE (GND), BLUE (BRAKE), and RED (BATTERY) wires are 12 gauge and the rest are 16. On my cable, though the 12 gauge wires are WHITE (GND) and BLACK/PURPLE (BACKUP). That seems bizarre to me. I would expect the heavier cables to be GND, BATTERY, and BRAKE. It looks like I will have to verify this one! GRR!!!!
Doing a little more research, I found that my cable is a Hoffman. Following the diagrams from Hoffman and from Airstream, everything worked out the same as your cable. I think I'm confident now that I have it right. Is your cable a Hoffman as well?
Bottom line, as long as I verify with the TV that I have the power and ground correct, I shouldn't blow anything up and can check the rest by function. :-)
Don't know who made my cable. I bought it at the local rv shop. But if there are two fat wires, those are definitely going to be the + and - (center and top). If you're not sure, call VTS. They're pretty good about customer service in my experience. Good luck with your move.
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