Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 11-28-2015, 03:41 PM   #1
Junior Member
Damon Owners Club
Join Date: Jun 2014
Posts: 27
Intellitec BCC info

Sorry for yet another thread on this, but I've been surfing through past threads all afternoon, and can't seem to find just the right information, or when I thought I did, most of the links to tech info were not functional anymore.

I have a 2005 Damon Daybreak, and I'm trying to locate a schematic of the BCC, the relays and the fuse assignments. I have essentially two problems:

1. The disconnect switch/isolator for the house batteries isn't functioning. The relay is apparently stuck in the closed position. The house DC is on all the time, and operating the rocker switch doesn't disconnect the batteries. I'm on shore power now, so we're maintaining a charge, but that won't be the case when I get on the road...which leads me to problem number two:

2. I'm having what seems to be a very common problem - the house batteries aren't charging when the engine is running, but if I hold the emergency-start switch closed, we get a charge.

I've seen some photos of the BCC with the two solenoids, but the wiring and the fuses aren't clearly defined. On the lower (plain silver) solenoid the white control wire is ground, and when I jump 12v to the other small terminal (pink wire) the solenoid closes, and we get a charge.

So I'm assuming that the emergency start switch and the charging system/BCC at some point share the same conductor (pink) that actuates the relay and connects house and chassis batteries.

What I'd like is a wiring schematic for the BCC so that I can troubleshoot the problems. I understand that the BCC won't make the connection to the house batteries until the chassis battery is sufficiently charged, but where does that switching happen?

I also believe that the disconnect solenoid for the house is an intermittent type that toggles on and off, which prompts the question...how do I toggle it OFF?

2005 Damon Daybreak F53 Chassis w/V10

Mennoted is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 11-28-2015, 04:03 PM   #2
Moderator Emeritus
Gary RVRoamer's Avatar

Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,632
Intelletec made several variations of their BCC, plus there are related products using their Big Boy disconnect solenoid or BIRD (Bidirectional Isolator Relay) device. If you could identify which one you have, more help would likely be forthcoming. The big Intelletec BCC (#769, #861, or #886) is a pricey piece of gear and usually found only in higher end rigs.

Here are some of the common Intelletec devices for RVs:
Products - DC Power Management - Intelligent battery charging -

And some other related products:
Products - DC Power Management - -

In basic configurations, a high capacity solenoid (like the Big Boy) is activated in two ways: (1) via the Emergency Start switch, or (2) when the engine is running (ignition switch on).

The battery Disconnect is usually a different solenoid than the Aux/Emergency start one. It is operated by the house battery disconnect switch.

Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is online now   Reply With Quote
Old 11-29-2015, 10:22 PM   #3
Senior Member
chboone's Avatar

National RV Owners Club
Ford Super Duty Owner
Join Date: Sep 2010
Location: Horse Town USA, CA.
Posts: 3,061
What your describing sounds similar to an RV Customs Products BCC. You may want to give them a call to see if they can help you.

RV Custom Products
14000 Anson Ave,
Santa Fe Springs, CA 90670
(562) 921-8353

If you still have the Sea Breeze in your signature the attachment may be of interest for it.
Attached Thumbnails
Click image for larger version

Name:	12 Volt Distribution Panel.jpg
Views:	3055
Size:	176.0 KB
ID:	113021  
1999 35 ft. Dolphin 5350, F53, Banks System, 5 Stars Tune, Air Lift Air Bags, Koni Shocks, Blue OX TruCenter, TigerTrak track bars F&R, Roadmaster 1-3/4" rear auxiliary sway bar, 2004 F450 Lariat 6.0 Diesel Crew Cab DRW, 4X4, B&W Custom Truck Bed, GVWR 15,000, Front GAWR 6,000, Rear GAWR 11,000, GCWR 26,000, 1994 36ft Avion 5er, GVWR 13,700
chboone is offline   Reply With Quote
Old 11-30-2015, 05:28 AM   #4
Senior Member
Join Date: Jul 2014
Posts: 11,712
The interconnect relay ( big boy ) on most late model MHs will not connect, until the battery that is receiving the charge reachs 13.5 volts.

In a by-directional system, either charging source ( alt or charger ) will cross connect the 2 banks at 13.5 volts.

You mentioned one solenoid staying engaged. Have you unplugged the shore power and tested it ?
twinboat is online now   Reply With Quote
Old 11-30-2015, 07:40 PM   #5
Junior Member
Damon Owners Club
Join Date: Jun 2014
Posts: 27
Thanks for the help everyone. I think I've found the details I need. There is a lengthy thread that covers the systems and relays/isolators and the BIRD system in great detail for anyone else looking for similar information: Let's Talk Batteries, Isolator and Voltages. A wealth of information in that one thread.
Boone, tks for the schematic, but I've since traded the National for the Damon. Sorry, I forgot to update that. Color me sheepish.

Twinboat, I hadn't checked that relay without shore power, but as soon as all this rain stops I will. I think I'm getting things sorted out. I'll let you know.

If anyone is looking for a service manual for the Intellitec BCC (or at least one variation) I found this online and it has been helpful: http://www.intellitec.com/assets/pdf/5301087new3.pdf
2005 Damon Daybreak F53 Chassis w/V10

Mennoted is offline   Reply With Quote
Old 12-01-2015, 06:10 PM   #6
Senior Member
Damon Owners Club
Join Date: Feb 2015
Location: North Florida
Posts: 333
Intellitec CS number is 941-697-9927 or 800-251-2408 and have your BCC number
Mark & Shana Miller
2008 Tuscany 4072 DP
Go Gators
markmiiler is offline   Reply With Quote
Old 12-03-2015, 06:24 AM   #7
Junior Member
Damon Owners Club
Join Date: Jun 2014
Posts: 27
Thanks for the suggestion Twinboat. I disconnected the shore power and the house disconnect functioned normally. When the shore power is connected that isolator/relay/solenoid stays on, and the disconnect rocker switch just inside the door doesn't override that. All the DC circuits (lights, etc.) are on. So apparently you can't disconnect the house while on shore power. I can't believe that I never noticed that before.

Re the charging of house batteries...I'm getting 14+ volts to the chassis battery (engine running and SP disconnected) but no charge to the house. From what I've been reading, the BCC can switch that on and off intermittently, so it's hard to know for sure if the alternator is charging the house batteries. (the emergency start switch works, so I know that the relay/solenoid is OK)
2005 Damon Daybreak F53 Chassis w/V10

Mennoted is offline   Reply With Quote
Old 12-03-2015, 07:06 AM   #8
Senior Member
Join Date: Jul 2014
Posts: 11,712
Some isolator circuits have an overvoltage protection. How much over 14 volts is the alternator charging.

It should max at 14.2 and drop back once the start batt is charged up.
twinboat is online now   Reply With Quote
Old 12-06-2015, 07:03 AM   #9
Junior Member
Damon Owners Club
Join Date: Jun 2014
Posts: 27

With shore power disconnected, engine off, I'm getting 13.2 volts at the BCC on the house circuit. (both terminals on the top relay, and the left side of the isolator (lower) relay.

I'm getting 12.7 volts at the chassis side of the (lower) relay. With the engine running the charging voltage is 14.2, which you said was the upper limit. If I jump 12 volts to the isolator relay (bottom relay, left small gauge terminal) the relay closes and the voltage is 14.1 all around.

I'm guessing that at 13.2 the BCC isn't calling for a charge on the house batteries. (?) Maybe I'll draw the house batteries down a few volts and then see if the isolator relay closes.

Thanks for the suggestion

2005 Damon Daybreak F53 Chassis w/V10

Mennoted is offline   Reply With Quote

bcc, intellitec

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Info on '99 London Aire "Diesel Pusher'? Gannet Newmar Owner's Forum 1 11-25-2014 06:46 AM
Carrying your Medical info with you? beamisl Just Conversation 26 11-05-2014 06:10 PM
Info re Winnebago Minnie wheels/tires! scbwr Travel Trailer Discussion 1 10-08-2014 08:35 AM
610 Series HWH - 2002 36ft Alpine HWH Motor Info BernieS Alpine Coach Owner's Forum 0 09-27-2014 11:41 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:47 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.