This is kind of a basic parts and solenoids are common, so the things to look for are the voltage being 12VDC , then I look at how what I have is mounted and wired as it is easier to go back with the same. Some are concerned with getting the very best but I tend to go for the quick and easy find on things that cost so little and lasted 15-20 years!!
I figure if it fails in ten, I'm not here to worry the issue!
But I do want a three post to replace three or four post to replace if I have four!
And I DO look for the higher amperage rating, rather than a lower rated for continuous duty. Yes, I will pay five dollars more for a higher rated if they have both!
But what you get on many RV is like this snip of the drawings fro your RV.
https://catalog3d.winnebagoind.com/menu/Parts.htm
Going down to the electrical and then to chassis wiring, we can get a picture of what you have as well as a parts number if wanting to go to RV parts. Searching the part number will often turn up dealers of that part number.
RV parts are often more expensive than standard auto parts but that is personal shopping choice!
BUT--Before changing, it pays to test and on this three lug type (some have four) the test is easy to do. You should have chassis battery on one big side lug and coach battery on the other big one. When the button inside is pushed it puts 12 VDC on the small lug and the solenoid should "thump" as it closes.
An easy test is to hold some metal part or wire on the big left lug to the center lug. That puts 12V to the coil and it should thump! If you leave it operated and look at the voltage on left and right, they should be very near the same as they are connected inside the solenoid!
No thump? solenoid coil may be bad OR the mounting screws may not be making good contact as they are used for ground on the three lug type. Check they are giving good ground before replacing the solenoid!
Thump but the left and right don't read the same voltage? Likely the solenoid contacts inside are burned corroded and not making good contact. Replace the solenoid!
But it pays to always keep in mind that the most common failure is not the parts but the connections which corrode so easy on RV. If the solenoid test good and the voltage is not getting to the battery, look for connections along the cables and clean them.
On a 2015 Vista, there was a mega fuse on the frame just behind the front wheel that sure looked like a blob of road oil!!
Click these snips to get the best view!
callsign N6WTH
Linear Mode
