Sounds like you have a bad connection at the battery. Try wiggling the cables.
Look for a rd “T”handle it may have a power cut off switch to keep from draining batteries. Try to follow the positive cable from the battery it should point in the right direction but the switch can physically be installed anywhere on the vehicle. Or the top of your batteries have colored lugs or knobs on top the post. They may be switch style that disconnect the power you have to google them to understand how they function
Need more information to assist --year make model --vehicle power or accessory power for interior of rv
No power means no connection between the battery and power panel. All you can do is check the connection on the battery POSTS. Clean them both well and make sure they are tight. If still no power, check to see if there's a power switch in the hot cable that's open. if it's closed and no power, open it and clean all contacts. Close it and check power. If still no power, it has to be in the connection at the power/fuse box. Pull the screws holding the power box in and check power from the battery at that connection. Be sure it's clean and tight and you should have power after that is done. If still no power, and you've cleaned, tightened, and checked power at every connection from battery to fuse panel, it will now have to be the main fuse blown or a dirty connection right there. You've done all checks and all is done, you should now have 12 volt power in the motor home. If you turn the key switch on and there's power, and none when key is off, I'd have to have the motor home in my presence to find the problem. I have 4 motor homes and they all work fine. And I did the electric on them. Now if you turn the key on and there's no power to anything in the motorhome, even the lights, then the wire on the relay under hood and behind the right headlight is either faulty, connected the wrong post, or the wire is mot connected at all. Check that relay with a test light with the switch off and on.
SOURCE: won't charge the battery
What you would need to do is to have the battery leads checked to see if it is producing the right amount of current sufficent enough to charge battery. This can be done with a diagnostics tool usually at your local auto repair store.This is make sure that your alternator is working properly.Then you need to make sure leads are securely tightened to battery terminals. Leads must be free of dirt and corrosion to ensure proper bonding. You can clean these with a small wire brush. Good luck
SOURCE: I have a 2000 ford
You must verify the main power cables to ground( -) and another to fuse box. If the lights not work, after you changed the battery and doesn't light anything in control panel( board), one of that cable is
interrupted.
SOURCE: changed starter, now no power. battery is fully charged.
While you're down there inspecting the connections to the starter,try backing the bolt out the wires are connected to, and clean where the starter touches the housing so it's nice and shiny and the bolt where it touches the housing so you can get a good ground, I've had problems with that in the past, maybe you could also try attaching a few ground straps from the engine to the body of the car or the frame the more grounds the better electrical connections you'll have
I recently tried
the DIY service and repair manuals from a website and it actually helped me repair transmission problem in my jcb 3cx site-master. it wont move forward or reverse, engine is good both solenoids for forward and reverse work.
I don't have much technical knowledge but I just followed it step-wise, and works perfect! got it from www.reliable-store.comAll the best
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