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Old 10-09-2011, 04:44 PM   #1
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Location: Granbury, Texas
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Relay Switch (Solenoid) Problem

Relay Switch (Solenoid) Problem

I have a 2004 Monaco Diplomat that I bought new more than 7 years ago. Recently, the 12 volt house power went out. I was able to trace the problem to the solenoid relay switch on the distribution panel located in the front bay below the driver side of the coach. The only purpose for that solenoid is to control the on/off switch at the doorway and the 12 volt power to the coach (I have read that the switch at the doorway is referred to as the "salesman's switch").

I have by passed the solenoid and that has restored the power to the coach temprarily until I can replace the bad solenoid.

The bad solenoid is part number LR9806C and it is the original installed by the manufacturer. I cannot find that exact part number but was able to locate a part LR9806CBIP on line and by looking at the picture it appears to be similar to the one I am replacing with the exception that it has a small circuit board (with a red and white wire) that is connected to the small + connected on the front right and a white wire that extends to the small - connector on the front left.

The original solenoid that that needs replacement does not have that circuit board on it. The solenoid that needs to be replaced is the original manufacturer's and is connected with a small red wire on the right side plus + and a small purple wire on the left side minus - small connectors. The purple wire extends to the on/off switch at the doorway.

My question is if the new solenoid part number LR9806CBIP is the right solenoid, will I need to connect the purple wire over the while wire that is already on the new solenoid.

Thank you for any advice as this web site has been very valuable in my efforts to located and solve this problem.

This may not be explained technically correct but the best I can do.

(Retired Air Force)

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Old 10-09-2011, 04:58 PM   #2
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Ford Super Duty Owner
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Location: Mcdonough, Ga.
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If the solenoid you have is crimped together, It needs to be replaced. If it is a solenoid that is held together with four screws, it can rebuilt. the one with screws is easily taken apart. clean the contacts and put back together.

1998 Pace Arrow 35 ft. F53 Ford V10 2012 Honda Civic toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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Old 10-09-2011, 05:08 PM   #3
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Same issue? Possible solution?
Monaco Signature Battery Disconnect Problem!
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Old 10-09-2011, 08:03 PM   #4
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The LR9806C solinoid is produced by KIB Electronics (KIB Enterprises - Excellence in Electronics). Have you tried contacting them for a source for replacement? Used on Monoco and Jayco rigs. However, post number 12 (Monaco Signature Battery Disconnect Problem!) in that thread BCooke reffered you to may be the answer to your question. Call Monoco to confirm. It appears this is a standrad latching style Battery disconnect relay. It only requires a 12VDC pulse to it to change ON/OFF switching. It does not require a constant control voltage signal to the small posts to keep it ON. That way it does not drain the battery down.

Dave in Virginia
1978 Winnebago Chieftain
Dodge M400 - 440-3
Classic Winnebago Site: http://www.classicwinnebagos.com/forum/index.php
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Old 02-02-2012, 11:37 AM   #5
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I have the same Latching Relay part # LR9806C which it's discontinued, the new part is LR9806C-BIP including a board. To call KIB enterprises their phone number is 574-262-0518 and they have excellent technical support.
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