Battery disconnect problem?

Lyndall

Hi ya’ll. Need help analyzing why my 2017 TAG boondock isn’t getting power from my fully charged battery. Details: worked fine past week. Before new trip, I charged the 100 Ah lithium battery w/ plugin outlet charger and then hooked up battery in camper. Then hooked camper up to shore power to get cooler going while packing. Then hooked up 7-pin. Disconnected shore power and drove to campsite. I believe (think) the battery disconnect was on all through all these (unfortunately?). 

Got to campsite and there’s no electricity to any camper accessories (LED lights, cooler, fan, nada). Checked connections on battery, checked fuses on converter, checked breaker switches. All good. 

Only thing I can think of is that the battery disconnect switch is out. Thoughts? Advice? Please!!!

The_Rigger

If the fuses are all good, it may be the switch is bad, or possibly a wire came disconnected somewhere.

Lyndall

So….rechecked the fuses when I got home and, indeed, one was blown. Now I know use a flashlight to backlight vs. evening sky . Duh. Thanks everyone 

ras

I carry an inexpensive multimeter to check voltages, fuses and connections.  You can learn how use one on youtube

The_Rigger

Lyndall said:

So….rechecked the fuses when I got home and, indeed, one was blown. Now I know use a flashlight to backlight vs. evening sky . Duh. Thanks everyone 

They make ATC and ATO blade-type fuses that have a tiny LED onboard that lights up when the main fuse link blows, making it easy to spot an open circuit. This might be the perfect application for those fuses.

FWIW, the newer WFCO power centers have LED blown-fuse indicators right on the circuit board next to the fuses; makes it really easy to spot a dead fuse.