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Old 06-02-2019, 11:56 AM   #1
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Fuse blows with no switch activation

2011 Essex, fuse F12 in electronics bay has a problem. Where can I find a J3 plug wire termination schematic? Newmar refuses to provide any type of source data

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Old 06-02-2019, 05:00 PM   #2
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Your subject is Fuse blows with no switch activation, which switch is suspect?Is f12 a self-re-setting CB?

Rick and Larrie Dee
1997 40' Newmar London Aire DP CTA 8.3 (Mechanical) 325 Spartan MM
Bringing her back to her glory.
'08 Jeep GC Overland.
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Old 06-03-2019, 12:50 PM   #3
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The fuse isn't resettable. Just a standard 2 pole 7.5 brown fuse. F12 controls my 2 visor shades and 2 sun shades, which none work
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Old 06-03-2019, 03:18 PM   #4
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I would start with disconnecting power (or unplug) at the shades and see if the fuse blows. Connect one at a time and see if the fuse blows.

Take pictures before disconnecting
2018 Dutch Star 4369 Spartan Chassis
2016 Jeep Cherokee, 1952 Willys CJ3A
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Old 06-04-2019, 12:55 PM   #5
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So I have done that by disconnecting the accessory wires at the switches with no luck. When I disconnect J3 connector in the electronics bay the fuse does not blow. My problem seems to be the orange wire common to pin 5, J3 connector. That orange wire goes from the KIB circuit board, into the coach, back to the electronics bay and to the relay board via a connector. When I disconnect the connector at the relay board I still blow a fuse. So the short is between J3 connector, pin 5 to before the momentary switches.

Now, if I just had a schematic to show me where pin 5 terminates....
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Old 06-04-2019, 04:08 PM   #6
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This is the drawing I have for my 2017 Dutch Star.
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Paul, Christy and Leap
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Old 06-05-2019, 09:53 AM   #7
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Thank you for the drawing. I have this drawing. Would you happen to have a drawing of where exactly pin 5 wire goes to? It's going somewhere before the switches which is where I think my problem is. Orange wire comes off of pin 5 but all 4 power wires are red
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Old 06-05-2019, 05:29 PM   #8
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So I found the smoking gun! J3 connector goes to KIB CONMNL12, located under the drivers left control panel. Board is shorted out. With the connector to the board disconnected F12 fuse does not blow. It sure would be nice to have access to the source data......

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fuse, switch

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