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Pickups Pickups - Archived Discussions Cabover Campers & Camper Trailers (pickups) 
1377 messages, Last post on Nov 20, 2003 at 1:43 PM
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somebody that may be looking for a great deal on a camping membership. Not that I want to push a sale here but my family has not been able to use it as much as we hoped. Now the in-laws went and bought into a 5 star resort campground here in North Georgia, its hard to not go there all the time. Any help would be appreciated. KO |
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| Sounds like the aux battery is set up right the relay is in line to open the connection if the battery voltage goes to low (probably around 10.5 v or so, the relay more than likely gets a control signal from some other sensor in the truck unless it is a self contained undervoltage relay. If you connect to the B stud you are feeding directly off of the battery and that will allow you to completely drain the battery, connecting to the A stud allows use of the undervoltage relay and thusly saving your battery. | |
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Thanks for your interest and comments. But if it was set-up correctly, i should not have drained the std. PU batt (as it is, actually all three). you agree?? There must be some reason tha manual says 'no wire on stud 'b' but yet it comes from factory that way. I want to find out exactly how the system is supposed to work befor I follow the owners manual and take the wire off stud 'b' as i would like to avoid hooking up the camper and simualate the failure again to see if the std. battery actually does disconect and not drain with the Aux and camper batt. Thks - please keep your ideas coming. Dealers are No Help and their STUPID SHOP MANUALS being only available to them on computer now makes it almost impossible for them to search out Aux. Batt. information and solution. Or at least it's so time consuming they have no incentive to do it. They say 'well you'll have to bring it in so we can test it'. Hell- I've already tested it to battery failure and i don't want them screwing around with something they admittedly know nothing about. 75v |
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I ran into the same problem at the dealer regarding the aux battery. The parts guy and I couldn't figure out all the details from the docs so he just ordered all the parts so he could see them and figure out the documentation. This is not a complex system. Don't despair, I'm 100% confident we can figure it out. I tried to send you some scans of the factory drawings but your email address isn't listed under your profile. Some facts. There must be two wires on the relay for it to do the job. The factory is crazy, don't worry about why it's wired stupid, just fix it. You are correct in your assumption that the aux and camper batt should be in parallel and may be run down all the way without affecting the truck batt. This is why the relay is there and it does work because this is how my truck is set up. We may want to do this by email but first I have some questions. -Are you electrically/mechanically inclined? -Did you get the Camper Wiring option on your truck? -Who wired your camper? -Do you own a volt meter? You can email me at vofm  home.com. Vince |
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I have read your post over and over again and the only thing I can think of is that either the control circuit for the under voltage relay is bad or that you may have mistakenly connected to the B stud. As for the wiring, without looking at the wiring diagram I would assume that the B stud is the input to the relay and the A stud is the output,when the manual states that the connection should be made to the upper A stud and not the B stud they mean the connection to the camper. |
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We took the ferry from Whittier to Valdez. Awesome scenery, waterfalls, glaciers, eagles, whales, seals, etc. Valdez is where the sea and the mountains meet. Coming in it looks like the mountains rise out of the see with no room for a town. But there is a little space, and all of it is used. The campgrounds were more like big RV parking lots. Late June and the place was filling up. We went around and took the tour of the oil facility. Thompson pass rises 2800 ft in 7 miles, if my memory is correct. That's 400 ft/mile, every mile, continuous uphill. Or, an 8% continuous climb. We had our 1500 w/4.8L engine, and had no problems maintaining speed up the hill. Tonight we finish packing and tomorrow we take off for the month of August. We are bringing our laptop, but don't know how often, or even if we will be able to log on while on the road. Later, Mike L |
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Loren, When I installed the Aux Battery relay in my truck, I followed most of Vince's instructions. I used the factory relay and the cable from the starter (fulltime source of +12V). The connector in the wiring harness supplies power to turn on the relay only when the truck is on. I have run down my aux battery without pulling down the main battery. Anyway, the truck supplies a signal to the relay. Fulltime +12V goes into the relay, the other side of the relay goes to the aux battery and camper. And the truck +12V and the aux +12V are totally separate when the ignition is off. If you can't get any help and want to see my hookup, I'll be close by about the 6th or 7th. You can call my dad's house (319)439-5348 if you want to get together for some corn nuggets or a Maid-Rite, or just to check out a working aux battery setup. I will probably check this group one last time tomorrow morning before we leave. Later, Mike L |
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Thanks all for you suggestions etc. vince4 - post 618 wk email loren.bovee frco.com FAX 641-754-2731 1) elect/mech inclined?-Yes 2) camper wiring opt?-yes including 5th whl. 3) Who?-Camper plug and 5th whl-Me 4) Volt meter?-Yes vince4/lariat1/mledtje - Here's the latest working with my dealer who called in a GM tech. adviser via phone and fax today. Received schematic for Aux Bat & camper wiring. Turns out that the Primary Bat. is connected to camper wiring and Aux. bat is supposed to be isloated by the relay when ignition is off. (opposite of what we all thought but no big deal if the relay is working - battery is a battery so don't care which one goes to camper -- Primary or Aux.) When Primary/camper bat. run down relay is supposed to connect Aux. battery for starting which didn't happen so -- will be checking the relay tonite to see if it is functioning. Stay tuned later tonite and i'll post relay test result. Of course it could have been a relay failure but working now!! Mike - Would like to meet you when you get to M'town. Please let me know which day it turns out to be and i'll drop what ever My wk phone 641-754-3401 -- I'm on the phone a lot so if you get my phone mail punch '0' and have me paged. If you don't mind Cessna Skyhawk rides let me know and might work for late evening when it cools down an NO bumpy air. Cessna N1575V Loren |
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I would be surprised if the Aux battery was used to start the engine. That battery feeds through a 50A relay, and either the relay would fail, or the engine wouldn't turn over. The signal to the relay on my truck has the relay open with the key off, and closed with the key on. My wiring is self made, and I ran the camper off the aux battery, and the main battery is totally isolated when the ignition is off. We will take you number with us, and depending on circumstances, we may take you up on your offer. Mike L |
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