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Old 08-25-2011, 09:20 AM   #1
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Join Date: May 2009
Posts: 16
Domestic solenoid switch

1989 CC Concept:

Right now I'm faced with replacing all of my batteries: chassis, domestic and generator. That will teach me to neglect fluid levels and I'll have to stay on top of my charging knowledge. Believe me that in the past couple weeks I've learned more than ever about this topic.

Anyway, in the past trip or two we've noticed the domestic power switch over the dash has been... twitchy. Sometimes it would take a flick or two to get it to come on. Now it won't work at all. I won't fully pass judgement though until I get new batteries that are fully charged installed.

After studying many diagrams and articles on the subject at hand... I'm wondering if my domestic solenoid (located in the 12v dist panel right next to the battery isolator) has pooped out. So I need to test that (if it doesn't start working when I get the new batts installed).

Any experience with all this?
btw: Heart Interface (with remote and jumpers) .. Freedom 20 inverter/charger (3-stage w/equalizing charge avail) charging domestic batteries.

thx for reading,

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Old 08-25-2011, 09:38 AM   #2
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Join Date: Oct 2009
Location: Varies Depending on The Weather
Posts: 8,517
Domestic power relays have never been reliable, that's what is activated when you use the Domestic Power Switch. Generally, the switches never fail, HOWEVER.....

#1. Do yourself a BIG favor and simply bypass the relay which will eliminate never having to get caught at the worse possible time for a complete failure to happen. Losing all 12 volt power to your coach in the middle of the night during a rain storm is not pleasant.

#2. Purchase two 12 volt PowerPulse units for your batteries. Install one on your house battery bank and the other will be installed on your chassis battery(s). It will eliminate any sufation from forming onto your new battery plates extending the life of the batteries.

#3. Always use distilled water and keep the plates covered at ALL times.

Dr4Film ----- Richard.

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Old 09-01-2011, 06:22 PM   #3
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Join Date: May 2009
Posts: 16
Has anyone ordered any factory parts from CC since they've been back in business this year? I've bought the new batteries and tested my domestic switch above the dash (appears to be working fine) and still 12v power won't go across my solenoid to the 12v distribution panel.
I'm wondering if CC can source that solenoid for me... and cost...? or should I try to find stats on it (12vdc, 200 amp, what else?) and buy a suitable replacement elsewhere.

Unless a rat chewed a wire deep inside the frame somewhere.. I just dunno....

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Old 09-01-2011, 07:14 PM   #4
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Country Coach Owners Club
Join Date: Jan 2006
Location: Redding
Posts: 3,516
Why not just bypass that solenoid and see if you get 12v systems power.

I do not know if the Concept does but many CC coaches have a 300A fuse between the batteries and the inverter in the inverter compartment and another in the battery compartment that have been known to blow.

Check your wiring diagram then locate the fuse block and test the fuse with a volt meter.


I have found them at a solar store also. Much cheaper online. Carry a spare.

Hope this helps.
1995 CC Magna #5280
C8.3L 300hp Cummins, 31,000lbs
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