Wet Bay 12 volt power

[dwkerch]

The wet bay in my '99 Diplomat has a 12 volt light on the bulkhead of the bay towards the rear of the coach, and a 12 volt power switch on the face of the panel towards the front of the coach. There is also a door switch that turns the light on when the door is opened, if the power switch is on. In wiring a 12 volt heater in the wet bay somehow I apparently blew a fuse somewhere but I can't find any fuses for the wet bay. The wet bay light is off - bulb is good, and the power switch has power because the indicator light is on beside the switch. All other 12 volt circuits in the coach works. Anyone know where I should look for a fuse for the wet bay light?

[nightriderrv]

Need to verfiy power going in to the switch and out of the switch then trace the wire over to the door switch check for power there it a push type switch make sure there is not any rust on the contact ares on the back you can hold the switch all the way down and let it go to pop it sometimes that will knock dirt or rust off of it if power is coming out then trace to light make sure power is there then check the light and light switch

[dwkerch]

Found the blown fuse. I had forgotten about the fuse / circuit breaker panel in the front left-hand basement door where the tranny control panel and other electronic controls are located.

[BFlinn181]

As you discovered, a 12v heater requires more power than a light circuit requires. I hope you don't just replace blown fuse with a bigger one. A 12v heater needs much heavier wiring and should have it's own fused wiring from a proper source, not hooked into wiring for a light.

[nightriderrv]

I agree X10 could melt wiring ouch!!!!

[dwkerch]

These thoughts (wire size and blade fuse size) did occur to me. The fuse is heavy enough but the wire gage is marginal so I do need to run a new circuit just to be on the safe side. However, the fuse didn't blow due to overload. As I discovered later, the jack plug on the heater wires had been poorly soldered and a couple of strands of the positive wire were touching the negative terminal, causing a dead short. I rewired the plug and all is well.