2021 Keystone Cougar TT 25 RDS 12V issue

[MXRacer]

Originally Posted by Marineman

Yes, those are the ones. I have two on mine. One is a 50 amp and the other is a 30 amp. Unless they are wiring them differently now, the 30 amp should be connected to your power jack and the other wire goes to the slide. The 50 amp goes to your fuse panel in the RV.

Do you have a multi-meter or test light?

Yes I do. Where do you find the schematics for my floorplan?

[Javi]

Originally Posted by MXRacer

Yes I do. Where do you find the schematics for my floorplan?

There are no model specific schematics. Put your hand on the positive wire from the battery and follow it away from the battery, it will lead you to the auto reset breaker.

[MXRacer]

Score a victory for this forum. I traced the 12vdc wires to my inverter and found the fuses/breakers/etc. Those all tested fine, but along the way I noticed that really the only thing I didn't test or isolate was this: a 200A Buss connected to the positive post of the battery. I thought, what the hell...I'll eliminate it from the circuit and see what happens.

When I reconnected the battery, it gave a solid spark, and the inverter and coach lit up like a Christmas tree. This was after the inverter and main panel were completely dead minutes before.

I really can't tell what happened here, but with this removed from the battery post, the trailer is alive and well. Maybe someone can explain the mystery. But I wouldn't have solved this without this forum. My wife had already made an appointment with an RV tech booked one month out at $149/hr.

You guys are awesome.

[mikec557]

Originally Posted by MXRacer

Score a victory for this forum. I traced the 12vdc wires to my inverter and found the fuses/breakers/etc. Those all tested fine, but along the way I noticed that really the only thing I didn't test or isolate was this: a 200A Buss connected to the positive post of the battery. I thought, what the hell...I'll eliminate it from the circuit and see what happens.

When I reconnected the battery, it gave a solid spark, and the inverter and coach lit up like a Christmas tree. This was after the inverter and main panel were completely dead minutes before.

I really can't tell what happened here, but with this removed from the battery post, the trailer is alive and well. Maybe someone can explain the mystery. But I wouldn't have solved this without this forum. My wife had already made an appointment with an RV tech booked one month out at $149/hr.

You guys are awesome.

That is a style of fuse, and rated at 200 amps I would say it's there because of the OTG setup. More particularly, I think it's the fuse to protect your inverter (not the converter/charger). Mine is a 150 amp, and I chose a reset-able breaker rather than this style of fuse. By the way, my inverter is 1000 watt. How many watt inverter do you have? Trace the positive wire that comes from your inverter to the battery. Is there a fuse or breaker along the way, or does that positive wire bolt on to this blown 200 amp fuse? What size wire is it? 2-awg or bigger?

You can buy those square fuses on Amazon. They're not expensive.

Edit, okay, I could be wrong on "cheap"... looks like $20.

https://www.amazon.com/Samlex-Solar-...753954&sr=8-22

I chose this style of breaker. Even though it's says it's waterproof I installed it inside my pass through by the inverter.

https://www.amazon.com/Inverter-Wate...753986&sr=8-18

[MXRacer]

Originally Posted by mikec557

That is a style of fuse, and rated at 200 amps I would say it's there because of the OTG setup. More particularly, I think it's the fuse to protect your inverter (not the converter/charger). Mine is a 150 amp, and I chose a reset-able breaker rather than this style of fuse. By the way, my inverter is 1000 watt. How many watt inverter do you have? Trace the positive wire that comes from your inverter to the battery. Is there a fuse or breaker along the way, or does that positive wire bolt on to this blown 200 amp fuse? What size wire is it? 2-awg or bigger?

You can buy those square fuses on Amazon. They're not expensive.

Edit, okay, I could be wrong on "cheap"... looks like $20.

https://www.amazon.com/Samlex-Solar-...753954&sr=8-22

I chose this style of breaker. Even though it's says it's waterproof I installed it inside my pass through by the inverter.

https://www.amazon.com/Inverter-Wate...753986&sr=8-18

I have the Freedom X 2000. I can't find any fuse between the inverter and battery. Thanks for the tip on the breaker. I will get one.

[mikec557]

Originally Posted by MXRacer

I have the Freedom X 2000. I can't find any fuse between the inverter and battery. Thanks for the tip on the breaker. I will get one.

You're welcome. I have the Freedom X 1000. Here's Keystone's schematic. I can't say that it's up to date, but as a general rule of thumb it'll give you an idea of how things should be wired. Note the wire size it shows is for the 1200 watt inverter in the drawing. BTW, the yellow highlight was on it when I got it.

[cavie]

Originally Posted by MXRacer

Neither the slide nor the jack work under 12Vdc power.

The slide and the jack work off of independent in-line fuses. Not supplied by the fuse panel.