Plain Jane Posted September 1, 2021 Share Posted September 1, 2021 Hello all, I bought my 1987 Dolphin with everything including manuals EXCEPT the original house battery AND, curiously, the battery manual. So not sure what specs a replacement battery should have. Could anyone help with this? Thanks in advance, PJ Quote Link to comment Share on other sites More sharing options...
linda s Posted September 1, 2021 Share Posted September 1, 2021 You need either a 24 or 27 size deep cycle battery. Find where it goes and measure to see what will fit. There are online measurements for batteries that you can look up. Just make sure the one you buy is a deep cycle. Hopefully you can find someone to help you who is not too stupid. I use the standard flooded acid type. They are the cheapest and mine have always lasted 5 years or more. Gel type is supposed to be better but I have changed out at least 6 Optimum batteries for friends and they were not old at all. Lithium batteries will cost you more than your Dolphin did. Some here have gotten high amp hours , time you can use stuff before power is gone, by connecting 2 golf cart batteries. I'll let them explain Linda S Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted September 1, 2021 Author Share Posted September 1, 2021 What about voltage? 12 volt? Just guessing - that seems like the most common. Quote Link to comment Share on other sites More sharing options...
WME Posted September 1, 2021 Share Posted September 1, 2021 24 and 27 batteries are 12 v. Quote Link to comment Share on other sites More sharing options...
Ctgriffi Posted September 1, 2021 Share Posted September 1, 2021 In case you like pictures... here's a basic, inexpensive Group 27 deep cycle that lots of folks use (and no, they are not fun to carry!). Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted September 1, 2021 Author Share Posted September 1, 2021 Thanks, @WME. Found the 24 size at Wally World and bought it. Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted September 27, 2021 Author Share Posted September 27, 2021 Sooo, here I am on the Dolphin's first camping trip to test all systems. Plugged the brand-new plug into the campsite power in the receptacle that took it and ... nothing. It's still a lovely night and don't need the AC, so have given up for the night, but ... WTF? Quote Link to comment Share on other sites More sharing options...
john*thomas Posted September 28, 2021 Share Posted September 28, 2021 Did you test the A/C before hand? It could be a bunch of things. Fuses, plug. power source, A/C itself, etc. Can you plug something into a receptacle and see if it works? Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted September 28, 2021 Author Share Posted September 28, 2021 Power worked fine off the truck battery - all the lights came on when I started the engine. Have combed the manual and can't find out where the fuses are located. Quote Link to comment Share on other sites More sharing options...
V6 Seabreeze 92 Posted September 28, 2021 Share Posted September 28, 2021 When you plug in at the power hookup Box at campgrounds Often the power switches are at OFF position. Just flip them to ON. Could be a simple fix. Quote Link to comment Share on other sites More sharing options...
linda s Posted September 28, 2021 Share Posted September 28, 2021 2 hours ago, Plain Jane said: Power worked fine off the truck battery - all the lights came on when I started the engine. Have combed the manual and can't find out where the fuses are located. Your fuse box for the camper is somewhere near the floor. A square or rectangle metal door with vents. Open it and you will see all the fuses. Here's a pic from a Dolphin Linda S Quote Link to comment Share on other sites More sharing options...
linda s Posted September 28, 2021 Share Posted September 28, 2021 Did your interior lights ever work when the truck wasn't running. Is the coach battery new? Check the coach battery with a multimeter with the truck off. Should be showing at least 12.6 if fully charged. Below 12 and your battery is already sustaining some damage. Below 11.3 and it's dead and you need a new one. If it's not too bad check voltage again with truck running. Should be 13.7 to 14.7. If battery tests OK then something else is hooked up wrong and the power is not getting to the coach. Fuses are probably not the issue because if they were bad it wouldn't work with truck running either. Linda Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted September 28, 2021 Author Share Posted September 28, 2021 Thanks all. It turns out the campsite power was delivering just fine, which I discovered when I touched the ends of the wires that are supposed to go into fuses and felt a brief tingle (yeah, I know, not a smart thing to do). I have two switches which I guess are supposed to be the terminals for those wires, but that's too advanced for me - I'll have to get the skoolie guy back do that. @Linda, I don't know if anything runs with the truck turned off - this trip is my chance to test everything. I've booked the site for another night because I'm determined to check everything I can. I'll need to get a multimeter today to see what's up with the battery. Quote Link to comment Share on other sites More sharing options...
WME Posted September 28, 2021 Share Posted September 28, 2021 A lot of the older converters (120vac to 12vdc) have a relay to switch things around between shore power and house power. Very common after all these years for a set of dirty contacts to mess things up. Emergency fix give the relay a wack with a screw driver handle. Quote Link to comment Share on other sites More sharing options...
extech Posted September 28, 2021 Share Posted September 28, 2021 next time you're in homies or lowes pick up one of these. then you can plug in at home Quote Link to comment Share on other sites More sharing options...
extech Posted September 28, 2021 Share Posted September 28, 2021 my fuse box is behind a regular cabinet door next to the bathroom Quote Link to comment Share on other sites More sharing options...
Maineah Posted September 29, 2021 Share Posted September 29, 2021 The AC and the lights have nothing to do with each other. Most small RV's have 3 breakers that look like the ones in the house a 30 (main breaker for every thing then a 15 for outlets and a 20 amp for the AC. They should be easy to spot. There are two systems lights, radio, water pump maybe a vent fan. Outlets, AC and charging systems require you to be plugged in. One of the simplest gadgets you can buy is a plug in outlet tester most hardware stores will have them like 5 bucks I leave mine plugged all the time it will also tell you if the camp ground is properly wired! Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted November 6, 2021 Author Share Posted November 6, 2021 1+ month later, and I found the breaker panel. It needed connecting again. My skoolie friend hooked everything up and made it electric campsite-ready. However, I also tried the generator at the campsite and nothing happened. I'm afraid I might have zapped the brand-new battery beyond use. Someone mentioned a multimeter, which I never did buy because I ran out of money. Would this work to test it before I go back and buy another battery? Quote Link to comment Share on other sites More sharing options...
extech Posted November 6, 2021 Share Posted November 6, 2021 you need to know how to test a battery with it, so yes it can work. most auto parts places have a battery specific tester they will use on your battery for free. Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted November 6, 2021 Author Share Posted November 6, 2021 11 minutes ago, extech said: most auto parts places have a battery specific tester they will use on your battery for free. Even better! I was trying to remember if gas stations used to have this, but Advance or O'Reilly or Auto Zone are fine. Thanks! Quote Link to comment Share on other sites More sharing options...
WME Posted November 6, 2021 Share Posted November 6, 2021 Take your battery back to where you bought it and have them test it. Many batteries have a 1 year no question warranty. After that it's pro rated. So don't but another new one if you don't have to. Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted November 6, 2021 Author Share Posted November 6, 2021 Thanks, @WME. I hope I don't have to have my receipt. Quote Link to comment Share on other sites More sharing options...
WME Posted November 6, 2021 Share Posted November 6, 2021 In the future take the receipt, stick it in a zlplock bag and duct tape it to the battery Quote Link to comment Share on other sites More sharing options...
fred heath Posted November 6, 2021 Share Posted November 6, 2021 5 hours ago, WME said: In the future take the receipt, stick it in a zlplock bag and duct tape it to the battery I do the same thing with one exception. The new laser printed receipts tend to fade out over time. I photocopy the receipt then place in the ziplock bag. Quote Link to comment Share on other sites More sharing options...
Maineah Posted November 6, 2021 Share Posted November 6, 2021 Some where on your battery is a date code some are obvious some are cryptic but it's there. Generally batteries are dry until they are commissioned then stamped that can give you a starting point. Batteries are expensive now a days! My camper batteries, house generator stay on a smart charger I generally get 5 years or more out of them. Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted November 6, 2021 Author Share Posted November 6, 2021 Thanks, all. Wal-Mart exchanged it with no questions. Now for the really dumb question: I don't want to ruin this battery by connecting it wrong. Could someone take a picture of how their house battery is connected to their Toyota and post it here? That would help enormously. Quote Link to comment Share on other sites More sharing options...
WME Posted November 6, 2021 Share Posted November 6, 2021 (edited) Instead of us posting pic of different RV how about you post a pic of your battery area and wiring. The reason is that other owners could have done weird things, so we need to see what YOU have. Speaking of things you have, do you have a voltmeter? Edited November 6, 2021 by WME Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted November 6, 2021 Author Share Posted November 6, 2021 (edited) The clamps used to be attached, and I have them. I don't know which wire's they were attached to, though. No, I do not have a voltimeter. Sorry, the picture uploaded sideways. Edited November 6, 2021 by Plain Jane Quote Link to comment Share on other sites More sharing options...
extech Posted November 6, 2021 Share Posted November 6, 2021 oh my. you're going to have to follow those wires. i assume the whites are negative and the reds positive, but you know assuming lets the smoke out, and you can never put it back Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted November 6, 2021 Author Share Posted November 6, 2021 Yes, I guess I'll need a pro for this 😞 Quote Link to comment Share on other sites More sharing options...
WME Posted November 6, 2021 Share Posted November 6, 2021 OK S.W.A.G. (semi wild behind guess) white - (ground) black and red +. Use a volt meter in the OHM function and check the white wires to the MH frame. Should be short. Care fully make sure red and black are touching NOTHING. Start the truck engine and using the volt meter to DC volts. Measure red and black wire. The black may be 0v thats OK. The red wire should be 13v+ DC. Shut the engine off measure the red wire again should be 0v. Next plug in the RV to shore power and measure the black wire again, should be 13v+ DC. If all this happens then hook up your new battery, if not let us know what you found. Quote Link to comment Share on other sites More sharing options...
WME Posted November 6, 2021 Share Posted November 6, 2021 (edited) 30 minutes ago, WME said: o Edited November 6, 2021 by WME Quote Link to comment Share on other sites More sharing options...
Plain Jane Posted November 13, 2021 Author Share Posted November 13, 2021 Problem solved! A kind forum member (the brilliant Fred Heath) hooked up my battery. My hero! Best and quickest fix that has been done on the camper to date. And now my furnace works too. And WME, you were right - the previous owner's wiring WAS weird. No match for Fred, though! Quote Link to comment Share on other sites More sharing options...
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