Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 

Go Back   Thor Forums > Thor Tech Forums > Maintenance and Repair
Click Here to Login
Reply
 
Thread Tools Display Modes
 
Old 04-04-2021, 05:59 PM   #1
Junior Member
 
Brand: Thor Motor Coach
Model: Miramar 35.2
State: Ohio
Posts: 11
THOR #17743
Miramar 35.2 lost 12v on Pass Side Slide

I have lost the 12v lighting on the passenger side slide(Bedroom nook and kitchen). Main BR lights still work. Checking at the nook switch, I have about 4v, not enough for the LEDs. Tried to trace back to the fuse panel, but too much crap.

Any ideas of likely issues?

Thanx in advance,
Chris

__________________
ChrisYingling is offline   Reply With Quote
Old 04-04-2021, 07:24 PM   #2
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 6,433
THOR #7035
Is that 12 volts between the wires or 12 volts from positive to ground? Sounds like it may be a corroded ground connection.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 04-04-2021, 08:00 PM   #3
Junior Member
 
Brand: Thor Motor Coach
Model: Miramar 35.2
State: Ohio
Posts: 11
THOR #17743
That is 3.8v between wires. Let me see if I can find ground back there in that cabinet.
__________________
ChrisYingling is offline   Reply With Quote
Old 04-04-2021, 08:16 PM   #4
Junior Member
 
Brand: Thor Motor Coach
Model: Miramar 35.2
State: Ohio
Posts: 11
THOR #17743
There is 3.8v measured from one wire of the switch to ground.
There is -0.25v measured from the other wire to ground.
I do not have continuity to ground from the -0.25 wire.
__________________
ChrisYingling is offline   Reply With Quote
Old 04-04-2021, 09:21 PM   #5
Site Team
 
16ACE27's Avatar
 
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 6,433
THOR #7035
OK, I thought you were measuringat a light fixture, not the switch.

But, the switch is interrupting the + 12 VDC side to the lights. I assume that 3.8 VDC to ground (and to the light side of the switch) should be 12 VDC. The -.25 VDC on the light side is just stray induced voltage, and I assume that is measured with the switch open.

So probably not a ground issue but a + 12 VDC issue - a corroded or loose connection somewhere. Time to back trace, that wire going to the switch. I would assume all lighting is on the same fuse so if the other side is working then there's probably a crimp splice somewhere that is the problem.
__________________
Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad
2020 Chevy Colorado Z71 Trail Runner Alternate Toad
16ACE27 is offline   Reply With Quote
Old 04-04-2021, 10:19 PM   #6
Junior Member
 
Brand: Thor Motor Coach
Model: Miramar 35.2
State: Ohio
Posts: 11
THOR #17743
Thanx Ace, I am thinking the same thing, but the wiring is just a mess. I have looked downstream at the other lights and switches and nothing, so, the 12v supply is likely the issue. Just need to find it.
__________________
ChrisYingling is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Thor Industries or any of its affiliates. This is an independent, unofficial site.




All times are GMT. The time now is 06:50 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 PL2