12V bedroom lights are all inoperative

[sierramp]

The fuse panel in my 2003 3575RL is not labeled so I have no idea which fuse might be the culprit. I checked them all with a flashlight and they look okay but the little devils are pretty hard to pull so I haven't removed / replaced them all. Any suggestions? Thank you.

[BB_TX]

You will probably have to pull them one by one. They are sometimes hard to tell if blown even after you get them out. A cheap fuse puller is a good tool to have.

Been a while since I looked. If you can get a meter lead on the end of each fuse you could check for voltage on each one.

[Lenny K]

You are right it is probably a fuse and they are real hard to remove without using a fuse puller. Normally you will have a red light glowing indicating which fuse is blown but not always. Get yourself a fuse puller and start checking.

[Lenny K]

And BB TX just told you the same thing at the same time...lol

[sierramp]

BB TX, Good idea to check the fuses with a volt-ohm meter. I hadn't thought of that. I will get a fuse puller. O'Reilly should have them. Thanks very much for your reply.

[sierramp]

LennyK Thank you for your reply as well. I really appreciate your help. A red glowing light would make things a lot easier wouldn't it! I will definitely get a fuse puller.

[coachgrowl]

I use a needle nose plier works better than a fuse puller.

[BB_TX]

The blown fuse LED needs a path to ground to illuminate. They are connected in parallel to the fuse. As long as the fuse is good the LED can’t illuminate. So you will need to turn a light switch on to provide a path thru a light bulb to ground to get the LED to illuminate a blown fuse.

[sierramp]

I have those so I'm ready coachgrowl!

[sierramp]

Thanks again BB TX. I will report back.

[CaptnJohn]

Originally Posted by coachgrowl

I use a needle nose plier works better than a fuse puller.

If you have a small pair I agree 100%. I use a pair about 1 size up from jewelers pliers.

[WeBeFulltime]

Originally Posted by coachgrowl

I use a needle nose plier works better than a fuse puller.

Same here!

[sierramp]

Thank you to everyone that contributed on this thread. I'm going to come clean here and hope nobody laughs too hard. I bought my 3575RL new in 2003 so I could compete with my agility dog and stay on site at the many venues from WA, OR, CA to NV. I went to a lot of trials for the first 3 years. My guy was the top Aussie in the US in one of AKC's classes. Then he partially tore an ACL and his career was over. We used the 5th wheel several times after that running an aviation event during the National Championship Air Races at Reno. Everyone in this group knows how awesome it is to have the best accommodations on site without having to travel to/from a motel.
But since quitting that event the 5th wheel has just been stored. Even now 15 years later I never regretted buying the 3575RL Big Sky. It feels like a member of the family. But in January someone doing 55 mph hit my husband's 350 that I had outfitted with an extra fuel tank and many Banks mods to tow this wonderful 5th wheel. The 350 rolled and was totalled. Thankfully nobody was injured. I still can't believe nobody was injured. Now coming back to the current issue of the fuses.... I did use needle nose pliers and got the fuses out and back in easily. I had all the 12V lights on and checked to see what went off when I pulled fuses. On the third fuse I pulled I couldn't see anything that had gone off. Then I saw the small (not 110 size) rocker switch upstairs. It wasn't a fuse. That darn rocker switch was in the off position and I'd forgotten that it was even there. All the lights are working. The Montana is such an awesome 5th wheel to be fully functioning with no issues other than operator error. Thank you all for answering my posts and helping. It means a lot.