Any reason I should not rewire?

Thank you all for the input. It has been very helpful.

The bar is connected to the output of the switch, and thus must feed everything else in the trailer (including slides, leveler, etc which do not work unless the switch is turned to "on"). Don't have an inverter.

kaydeejay wrote:

MEXICOWANDERER wrote:
The O-N-L-Y device not to be switched off with a master disconnect is a BILGE PUMP. If your rig has a propeller then it's time to stand back and review the options.

Not quite true - the trailer breakaway switch should have power at all times too.

Scooze me

Never heard of a towed unit referred to as a "coach" before. That's also the rrason for the propeller crack...

Winged One wrote:
...See picture:

Assembled late on Friday, 10 minutes before quitting time ... oops!

Tom N wrote:
Easily solved by removing the negative battery terminal.

So long as you remember to reconnect it before towing it.

Easily solved by removing the negative battery terminal.

My guess, as others suggested, is that it's your brakes for the breakaway switch. Don't alter it if it is that.

Where does that bus bar next to the disconnect switch get wired into things—is it on the battery side of the switch, or on the switched side? If it's on the battery side, probably one or more of the wires leading off of the circuit breakers there goes to the detectors etc. that are causing the draw, and this particular circuit could somehow be switched over to the other side of the disconnect switch with more or less impunity. There are many other things that might be wired on the unswitched side of the shut-off switch for various reasons—slide out or entry step motors/controls, levelers, an inverter (mostly because of the large current draw which may overtax the contacts in the switch), the converter (so you can charge the battery with the shutoff switch off), the charge line from the truck connector....

MEXICOWANDERER wrote:
The O-N-L-Y device not to be switched off with a master disconnect is a BILGE PUMP. If your rig has a propeller then it's time to stand back and review the options.

Not quite true - the trailer breakaway switch should have power at all times too.

Just make sure it does not go to the brakes. You don't want those off ever just in case you forget to turn it on before you leave.

Yes, you can do that.

Keep in mind that batteries have a self-discharge rate effected by different things (temp, what they're sitting on, etc) so there's no guarantee that they will stay "fully charged" without the battery tender.

If you are using a BT, you might want to leave it as is since a little draw can be beneficial.

That looks like an awfully big gob of wire exposed from your connector, btw.

The O-N-L-Y device not to be switched off with a master disconnect is a BILGE PUMP. If your rig has a propeller then it's time to stand back and review the options.