Results for "fuse blowing"

Opened my RV this morning to find the 12V system going haywire — lights dimming randomly, fans slowing down, and the inverter shutting off despite full batteries.

Specifically, I need to understand the fundamentals of RV batteries - different types, proper sizing, charging requirements, and maintenance. I'm also confused about DC wiring best practices, what gauge wire to use for different applications, how to properly route and protect circuits, and where fuses and breakers should go. Voltage monitoring is another area where I'm lost - I see all these battery monitors and don't know what I actually need or how to interpret the readings.

I'm also planning some system upgrades down the road like adding solar or upgrading to lithium batteries, so I'd love to understand how all these components work together and what I need to consider for future modifications. Is there a comprehensive resource that covers all aspects of RV DC electrical systems from batteries and wiring through monitoring and upgrades? …more

Opened up my RV this morning to prep for our two-week cross-country trip tomorrow and the electrical system keeps tripping the breaker every time I run basic appliances! My RV's entire 12V system just died completely - no lights, no water pump, nothing. I've checked everything I can think of and I'm pretty sure it's the auto reset breaker that's failed.

I have a WFCO converter/charger setup with dual 6V batteries, but I can't get underneath right now to read what's stamped on the current breaker. I need to order a replacement but I'm not sure what amperage to get. I keep seeing 30A, 40A, and 50A options online but I don't want to guess wrong and either undersize it or waste money.

What's the typical auto reset breaker size for this type of setup? Is there a standard that WFCO usually pairs with dual 6V battery systems? …more

Ripping out my old Suburban water heater to install a Girard tankless but the wiring is completely different — DSI ignition board, different voltage requirements, and the old thermostat wiring doesn't match up. Need a clear wiring diagram for this swap. …more

According to every YouTube video I've watched, finding the AC fuse in my 1997 Pace Arrow F53 chassis should be easy, but I'm completely lost staring at this hood fuse box. The AC stopped working completely and I'm pretty sure it's just a blown fuse, but I've been staring at this under-hood fuse box for an hour and can't figure out which one controls the dash AC.

I see tons of fuses in there but none are clearly labeled for AC that I can tell. Is there a specific name I should be looking for? And what amperage should this fuse be? I really hope someone can point me in the right direction because this heat is killing me and I know it's probably something simple I'm missing! …more

Got three YouTube tutorials under my belt trying to fix my gas motorhome's air horn compressor fuse problem since May, but now it's blowing fuses even faster. System functioned properly through summer operation. Recently discovered air horns non-functional with blown 25-amp inline fuse. Replaced fuse and attempted system energization - fuse blows immediately upon key activation.

Conducted continuity testing between compressor motor leads (red/black wires) using digital multimeter. Results show full continuity, indicating potential short circuit condition. Testing reveals continuity between power lead and air tank connection points as well. The two connectors at the top of the air tank also show continuity.

Based on immediate fuse failure and continuity readings across motor windings, suspect either seized compressor motor or internal wiring short. What diagnostic steps should I follow to isolate whether this is a motor failure requiring compressor replacement versus other system components? I've already sent an inquiry to the manufacturer a week ago with no response. …more

Last month what seemed like a simple electrical hiccup in my 2005 Ford E450 Isata 250SL has spiraled into a complete system meltdown. My Intellitec BD-0 disconnect switch isn't working properly and I suspect the latching relay might be the culprit, but I'm honestly afraid I'm going to damage something if I start poking around blindly.

I've been searching everywhere but I just cannot locate this latching relay! I don't want to accidentally disconnect the wrong thing or cause any electrical damage to my coach batteries. Where exactly should I be looking for this relay? I'm being very cautious because I know RV electrical systems can be dangerous if you mess with the wrong components. …more

Our 2017 Prevost coach's Outback VFX2812M inverter/charger died completely and my wife keeps asking why nothing electrical works anymore. The unit appears to be getting power since the cooling fan kicks on and runs, and when connected to shore power, 120VAC passes through just fine. However, when I disconnect from shore power and shut down the generator, the inverter completely fails to produce any AC power output.

What's particularly concerning is that the MATE digital controller inside the coach never powers on - the display remains completely blank with no indicator lights whatsoever. I have a brand new 12VDC battery bank, so I don't believe it's a battery issue. I've already tried disconnecting both AC and DC connections and reconnecting them, but aside from the fan running for about a minute during startup, nothing else happens.

I'm wondering if there might be internal fuses within the VFX2812M that I should be checking, and also whether the blank MATE controller display might be related to the same underlying problem. What are the most likely culprits when you have fan operation but no inverter function and no controller display? …more

Nobody wants to deal with the same front marker light issues on their 2013 Forest River Georgetown 377XL's Ford F53 chassis every single camping season.

The lights work sometimes but not others, and I can't figure out the pattern. I've already checked fuses and replaced the bulbs, but I'm hesitant to start pulling apart wiring without knowing what I'm doing. I keep reading about electrical problems getting worse if you don't fix them right, and I really don't want to create a bigger issue.

What are the most likely causes for intermittent marker light failures on F53 chassis? I'm hoping there's a systematic way to troubleshoot this without risking damage to the electrical system. …more

Already replaced my 1997 Fleetwood Flair's converter yesterday but something still doesn't seem right — battery shows proper voltage but absolutely zero power to any systems. All lights, pumps, and electrical components are completely dead.

I've verified the battery condition multiple times, so I know that's not the issue. What are the most common causes when you have a good battery but zero power output to the RV systems? I need to systematically check the electrical system but want to focus on the most likely culprits first.

Looking for specific troubleshooting steps to diagnose where the power is being interrupted between a good battery and the rest of the electrical system. …more