Save 50% Off of Campsites with Passport America

How Do I Wire The Batteries On My Motorhome?

by Kelley
()

How Do I Wire The Batteries On My Motorhome?

How Do I Wire The Batteries On My Motorhome?

Please someone I need help hooking up the battery terminals on my 1992 Allegro Bay Motorhome. It consists of 3 batteries; 1 which starts the engine & the other 2 are generator & interior related. I am a female and I'm clueless. I already appreciate anyone's help.

Kelley

Let The Good Sam Extended Service Plan Pay Your RV Repair Bills

ANSWER: Greetings Kelley thanks for submitting your question on our Ask An RV Question Page.

Let me start off by saying that if you have any doubts after reading the outline below about hooking up the batteries in your RV, you should get a more knowledgeable friend or neighbor to help you hook up the batteries on your motorhome. If this process is done incorrectly it can cause severe damage to your batteries and the 12 volt electrical system on your motorhome. There is also the risk of starting an electrical fire in your motorhome.

This information is not meant to scare you; it is meant to make you aware that you may be better off having an RV Technician to the job for you. The money you spend to have the job done correctly will cost far less than repairing the electrical system on your motorhome.

Are you paying too much for your RV Insurance? Click here for a free quote from Good Sam

That being said; let me get started on the guidelines. I am assuming that there are no batteries in the RV currently. If the old batteries are still in the RV all you need to do is hook them up the same way they are currently hooked up. If there are no batteries hooked up in the RV then keep reading.

I am assuming that the two batteries that are being used on your RV for the house battery system are two 6 volt batteries hooked up in series. The way you tell if they are 6 volt batteries is by looking at the top of the battery. A six volt battery will have three caps on top where you add distilled water. If they have 6 caps each then they are 12 volt batteries and the wiring diagram below will not work for two 12 volt house batteries.


Two 6 volt batteries wired in series diagram


First make sure that all 12 volt systems in the motorhome are turned off and the ignition of the RV is in the off position. The first battery you should install is the motorhome starting battery. Once you have the 12 volt starting battery secured in the battery tray you need to hook up the positive battery cable first. The positive battery cable for the motorhome will be a cable that goes to the engine compartment of the Motorhome. You then need to hook up the negative cable to the starting battery.

OK it is now time to hook up the two 6 volt house batteries of the motorhome. These two 6 volt batteries need to be hooked up in series in order to power the 12 volt system of your motorhome. Take a look at the diagram to the left to see how to hook up these batteries.

Now here is the problem, if you are not sure which cables lead where then I am going to again suggest that you have an experienced RV Technician do the job for you. You may have optional electrical accessories in your motorhome such as power inverters, etc. that are hard wired to the house batteries. Again if these electrical accessories are hooked up to the batteries incorrectly it will damage them.

Hopefully this information has been helpful to you. If any of our visitors have suggestions for you they can add them to this page by clicking on the "Click Here To Post Comments" link near the bottom of this page.

Happy RVing

RVing Al

Join the Good Sam Club Today! The Official RV Community Club

Camping World

Check out what's on Sale at Camping World! Hundreds of Items - Huge Savings. Click here to shop!

Comments for How Do I Wire The Batteries On My Motorhome?

Average Rating starstarstarstarstar

Click here to add your own comments

Rating
starstarstarstarstar
3 battery 12v system
by: Anonymous

Please help!!! I need the Battery Schematic/Wiring Diagram for a 1997 Fleet Wood Bounder 35' 454 engine C30 frame. I am trying to figure out for Days now.. How to wire a 3 Battery 12v System. One Battery for the engine and Two Batteries for the coach. This System Has a Converter, Has 2 Solenoids, and Solar Power.

Rating
starstarstarstarstar
Which cable gets connected first?
by: ChrisAnonymous

do you hook up Hot (red) first then the negative (black)? And to disconnect take off Black then red?

Rating
starstarstarstarstar
Battery wires
by: Anonymous

Do you have a diagram for a 3 battery system

Rating
starstarstarstarstar
Information on Batteries.
by: Anonymous

I have a Safari Trek. At one time it had a grand total of 5 batteries. Two for starting, and 3 for In house. I enjoyed the diagram for the 4 I house batteries. I have 2, 6 volt in house batteries now. Someone convinced me to change to those from 12 volt. I want to restore it back to its original 3 12 volt batteries. Do you have a diagram for that?

Rating
starstarstarstarstar
Batteries
by: Anonymous

we have one white one black, not sure which is positve and negative . any advice?

Rating
starstarstar
Battery Hook Up$-
by: Fred

Would really have been helpful if you had posted a diagram for 4-battery hookup. Your two battery configuration diagram is not helpful beyond 2 batteries.

Comment from RVing Al: Hi Fred, hopefully the picture below will be helpful to you.


Rating
starstarstarstarstar
frustrated with 12 volt battery hookup.
by: David M. Taylor

I have four (4) 6volt Deep well House batteries that take lcare of the 12 volt system on My 2001 Monaco Knight Motor Coach. I just replaced all 4 of those batteries and thought I had everything hooked up right but:
1. Drivers seat forward and rear seat control operates opposite of what it should. lWhen lyon push the button to move the seat up it goes back.
2. I have 12 volt lights
3. I do not have any 12 volt power to operate my slides
4. No power to light up the "Status Panel" for fresh,grey and black water tank levels.
5. I have no power to the vehicle radio
6. I have no pattern power to start my generator.

Need diagram for for a four "House" battery setup. Please e-mail this to me at david1480@suddenlink.net

Rating
starstarstarstarstar
BATTERY CABLES
by: Anonymous

POSITIVE BATTEREY CABLES ARE RED NAGATIVE CABLES ARE BLACK

Rating
starstarstarstarstar
Do I have 12V batteries? How do I put them in?
by: Cince

I have inherited a 2002 Thor Hurricane with the GM 400 drive line. Need help installing the Batteries to all the Cables.
Thanks,
Vince

Rating
starstarstarstarstar
Battery installation
by: Anonymous

I have a 2002 Hurricane by Thor, I think, it was inherited. I replaced the dead battery's. Thought they were 12V, it has a 400 line GM, HOW DO I install the cables?

Rating
starstarstarstarstar
battier
by: Steve kreutz

I have a 1991 Chevy challenger 32ft and it had no battier i have 3 12 volt battier how do i hock them up.

Rating
starstarstarstarstar
Deep cycle series
by: Anonymous

Does it matter which battery is hooked up to the charging cable?

Rating
starstarstarstarstar
Motor home
by: Randy

I need 2- 12 volts batt. puting out 12 volt... needs the extra amps for thr gen.

Rating
starstarstarstarstar
wiring to 6volt batteries in series
by: Anonymous

Thanks for the diagram and help

Rating
starstarstarstarstar
2 or3 batteries total?
by: Anonymous

A little confused altho the diagram was helpful,about the 12volt battery that connects to starter.is that to be connected to two 6 volt batteries in series making a total of 3 batteries or is it only 2 batteries needed total? Thanks for your advice.

Comment from RVing Al: The Chassis (starter) battery is a separate battery from the House Batteries and is not connected directly to the house battery system. Hope that helps.

Rating
starstarstarstarstar
Thanks
by: Anonymous

Pictures are worth a thousand words

Rating
starstarstarstarstar
6v in series
by: Anonymous

thank you for the clear diagram.
i always get confused about series and parallel hookups.
db/

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Ask An RV Question.

Recommended Reading For You







Good Sam Roadside

Good Sam Travel Assist

Click Here