Coast Resorts Open Roads Forum: Class C Motorhomes: B+ motorhomes

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Topic: B+ motorhomes

Posted By: burlmart on 06/23/13 09:03am

here is mine
[image]

and yours

* This post was edited 05/22/15 09:52am by burlmart *

2005 Trail Lite 213 B-Plus w/ 6.0 Chevy

Posted By: Snowman9000 on 06/23/13 09:16am

Burl, just a quick reply.
You are onto something. I've been out taking measurements.
Apparently there is something like a Trik-L-Start installed.
When there is charging going to the house battery, the chassis-house relay is powered. But at least on mine, when everything is off, that relay is open. I have to make a drawing with my measurements, and then see if we can find a tech wizard here to tell us what we've got.

Currently RV-less but not done yet.

Posted By: burlmart on 06/23/13 11:30am

Thank God! I've been thinking I was crazy about this for several years now!

My memory of the last time I tried to concisely figger all this is that whenever there is AC, the batts get charged. (and, I guess when the alternator of engine is running, as well)

I cannot say for sure anymore that my bstts are linkrd in the absence of any other power source -- I was pretty sure of this at one time, but haven't tried to verify once I put a terminal disconnect on the house batt so I could physically ensure that the two were indeed separate (I rarely bother to use this disconnect anymore, and see no issues with the batts with RV in STORE between monthly runs)

* This post was edited 06/23/13 11:41am by burlmart *

Posted By: Snowman9000 on 06/23/13 11:41am

burlmart wrote:

Thank God! I've been thinking I was crazy about this for several years now!

I do not really understand what you just wrote.

My memory of the last time I tried to concisely figger all this is that whenever there is AC, the batts get charged. (and, I guess when the alternator of engine is running, as well)

I am not sure I understand it either, lol! I haven't had time to sit down and draw it out so I can connect the dots in my mind.

I have figured out one thing: If you arrive at a CG and plug in, and if you DO NOT switch the house battery on ("USE"), it will NOT get charged. When you plug in, the red light on the battery switch comes on, which is the same thing it does when you switch it to USE. But apparently that's misleading in this case; it does not mean you are in USE mode. It only means the house circuits are getting power from either the converter or the battery. The house battery won't be engaged unless you physically push the switch to USE.

When I looked at my diagram this morning, that possibility crossed my mind.

Posted By: burlmart on 06/23/13 11:55am

That would be good so you could prevent cooking house batt at a CG. I may have assumed this to be the case at one time, but now I just let it charge for the couple days we are on shore power.

Posted By: burlmart on 06/23/13 12:08pm

You may have missed this edit where I add some detail and I did get what you were saying, I think,

burlmart wrote:

Posted By: Snowman9000 on 06/23/13 12:42pm

Good point about cooking the house battery, Burl. A better converter charger would not do it, but ours would over a period of time. BTDT with a different RV, but same charger.

I started a thread in the Tech folder about this.
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/27039341.cfm

As an aside, I moved my Kwikee steps power wire from point C to point D (chassis battery, always powered). When taking the TL out of storage, the step did not retract upon starting the engine, because the house switch was in the off (Storage) mode. So I caught the step on the building door opening. [emoticon]

Actually I forgot all about the step being out. But that's what the Kwikee design is supposed to take care of. If it has power. The old step is ruined and I'm waiting for my new one to arrive. In consulting the gurus here, I decided to take the advice of wiring the power from the chassis so it is always available. I did test the draw and it only draws a few milliamps to stay ready.

Posted By: Snowman9000 on 06/23/13 12:47pm

PS Burl. There were some funny short lived voltages across the upper solenoid, which would lead you to believe the chassis and house batteries were always connected. Then I'd hear the solenoid click, and the reading would be 0. So maybe this mystery charging logic thing is keeping the solenoid powered for a few seconds. And if you took your readings right away after cutting the charge, it would show as connected. But from what I could see, the batteries are not connected when everything is off.

Posted By: Snowman9000 on 06/23/13 01:32pm

I think I found the answer to my own question, and posted it in the Tech Issues thread.

We have an Intellitec Bi-Directional Isolator Relay Delay (BIRD).
It does what Burl discovered.

Service manual

Brochure

I haven't located it. I am guessing it is under/inside the fuse holder in that relay housing. It makes my wiring diagram a bit wrong on the labeling of some small wires, but I need to look at that another day with a fresh brain.

Posted By: Snowman9000 on 06/23/13 01:40pm

I wonder if we have one of these, also.

EDIT:
No, we have this (BD0) (brochure).

Owners manual for same.

* This post was edited 06/23/13 02:07pm by Snowman9000 *

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