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How do I get the coach batteries to charge on a 1995 Allegro Bay Motor home

When plugged in or using generator the coach batteries are not charging. Is there a switch or something else I can try?

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  • 3 Answers

Check Ground wires

Posted on Jul 28, 2013

Testimonial: "This did not help as the ground wires are fine. The batteries are I can hook a charger up to them and charge them, but I'm not able to get them charged thought the generator or shore power."

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Posted on Jan 02, 2017

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gregstobbe
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SOURCE: troubleshooting charging system problem

First need to know what type and make of car you have.
most likely not on the problem in the door being any relation to the charging system as this is a seperate system.
and as for the alternator putting out voltage, if you put a volt meter to the lug on the back it should read about 14 volts, however this is not set in stone. you will also have to have the proper amps comins out.
I would take the vehicle to someplace like autozone and have a check done on the battery and charging system as they do this for free. As long as both check then you most likely have a wiring problem from alternator to battery issue.

Posted on Dec 27, 2008

  • 8 Answers

SOURCE: coach battery not charging using shore power.

u have a simple problem If uare not holding charge...... u have a leak some where man. did u install ne thing new? are thier different things applyed to the battery that could run it dead or not allow u to get the correct amount of ampigze.

Posted on Mar 12, 2009

  • 2 Answers

SOURCE: changed battery alternator and plug still not getting charge

check dist ign module

Posted on Apr 11, 2009

  • 127 Answers

SOURCE: I have a onan genset generator model #3.0AJ

The wiring diagram for the generator is pretty simple. You have three wires coming out, White/Green/Black. The black is the Hot, White is neutral, and green is ground. If the generator is running and you do not have power at the black wire, the problem is in the generator. Check the circuit breaker on the generator for OK. Make sure that power is passing through it.

Posted on Jul 05, 2009

dnewcombe1
  • 1564 Answers

SOURCE: 1996 Fleetwood Motorhome Start problem

First before we start buying any parts. Have someone tap the top of the starter solenoid on the pass side engine wall. Do this while you're turning the key.If it starts thats one problem out of the way. As far as the regulator and its condition the coach could have been asembled in several possible states and or countries. I've never seen two alike unless they were lined up at a dealership...lol. Just grab one of those 10 dollar meters and check the voltage at each battery while its running, while it's not running and while you are switched to dual mode.All may be well.or not. But you'll save a lot of time with that little meter.There is no practicle way(being a sealed unit) to actually check the regulator.Keep it simple and take your time. Good Luck. P.S. The alternator also has an internal regulator so run checks with the lights and fans on to make sure your getting sufficient voltage all the time. Thanks, Dana.

Posted on Aug 25, 2009

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1 Answer

I have a 2000 motor home that has new batteries for running the motor and mariene battery for appliances and generator. They are constantly having to be boosted. Why won't they stay charged?


The new batteries are not being charged by the charging system(s) of your motor home.

You can stop by Autozone or comparable parts store and have them put a tester on your charging system and they will most likely show you have a defective alternator / charging system.

Aug 17, 2016 | Cars & Trucks

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Wiring diagram for the coach of an allegro bay motor home made in 1990


contact the manufacturer on line or any distributor of the make of motor home

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head lights must come on, or the battery is dead.!!!
the head lights work key off. so that is first check, and first to fix.

when this happens you have a dead battery, (fuses good, and tested all fuse,in engine bay.
  1. the classic, jump start using jumper cables .
  2. charge the battery so it reads 12.6vdc rested
  3. try a known good battery in car, that works in another car.

easy, right?

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1984 pace arrow 454 chevy, just quit no engine,lights etc. batterys show charge, no elect


The engine and chassis circuits are not directly connected to the coach.
If the engine battery shows that it is charged, you would check the circuit from the battery to the starter and to the fuse box. Be sure and check the ground connections too. Could be a faulty wiring connection or a fuseable link.

Oct 04, 2012 | 1989 Cadillac Fleetwood

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Troubleshooting starting a 1985 pace arrow motorhome. Charged 3 batteries. Got it started. Couple days later wont turn over.one battery bad so disconnected cables from bad battery and connected to other....


Does it crank over? The battery you unhooked? It was one of the coach batteries right? It has a single battery for the engine and two for the coach?

Jul 10, 2010 | 2001 Ford Super Duty F 450

1 Answer

New batteries and alt. still no charge.


Generator with Integral Rear Mount Voltage Regulator, Internal Fan Type With the key in the RUN position, voltage is applied through the charge indicator lamp I circuit to the voltage regulator. This turns the voltage regulator on, allowing current to flow from the battery sense A circuit to the generator field coil. When the engine (6007) is started, the generator (GEN) (10346) begins to generate alternating (AC) current which is converted to direct (DC) current by the rectifier internal to the generator. This current is then supplied to the vehicle's electrical system through the battery positive voltage (B+) terminal located on the rear of the generator. Once the generator begins generating current, a voltage signal is taken from the stator and fed back to the voltage regulator S circuit, turning off the charge indicator/lamp. With the system functioning normally, the generator output current is determined by the voltage at the A circuit. This voltage is compared to a set voltage internal to the voltage regulator, and the voltage regulator controls the generator field current to maintain proper generator output. The set voltage will vary with temperature and is typically higher in the winter than in the summer, allowing for better battery recharge. With the system functioning normally, the generator output current is determined by the voltage of the A circuit (battery sense voltage). The A circuit voltage is compared to a set voltage internal to the voltage regulator, which controls the generator field current to maintain proper output. The set voltage will vary with temperature and is typically higher in the winter than in the summer, allowing for better battery recharge in the winter and reducing the chance of overcharging the battery in the summer. A fuse link is included in the charging system wiring on all vehicles. The fuse link is used to prevent damage to the wiring harness and generator if the wiring harness should become grounded, or if a booster battery with the wrong polarity is connected to the charging system. Mitsubishi 215-Ampere Generator
The Mitsubishi 215-ampere generator is an internally regulated, brushless unit that is self-current limiting and temperature compensating. The regulator is integral with the generator and the fan is external.

VISUAL INSPECTION CHART Mechanical Electrical
  • Before attempting to test a battery, it is important to give it a thorough examination to determine if it has been damaged.
  • Batteries are tested to determine the state of charge and ability to crank an engine. The result of these tests is to show that the battery is either good, needs recharging, or must be replaced.
  • Preliminary checks to the charging system should be made regardless of the fault condition. These checks include:
    • Check the fuses/fuse links to the generator to ensure that they are not burned or damaged. This condition, resulting in an open circuit or high resistance, can cause erratic or intermittent charging system concerns.
    • Check battery posts and cable terminals for clean and tight connections. Clean the posts and the cables to ensure good electrical contact.
    • Check for secure connections at the generator output, voltage regulator and engine ground. Also check the connection at the power distribution point.
    • Check the generator drive belt to ensure proper tension and no slip between the generator pulley and the drive belt. Refer to Section 03-05 in the Powertrain, Drivetrain Manual.
    • Check battery for full charge.
  • Before performing charging system tests on the vehicle, note conditions such as: slow cranking, discharged battery, charge indicator lamp stays on with engine running, charge indicator lamp does not illuminate with ignition switch in RUN and engine not running, etc. This information will aid in isolating the part of the system causing the symptom.
  • When a relatively new battery is discharged, test for current drain. The following are some of the most common current drain concerns:
    • Glove compartment lamp stays on with the door closed.
    • Engine compartment lamp stays on constantly.
    • License plate lamp or interior lamp stays on constantly.
    • Other electronic component concerns.

Aug 14, 2009 | 2005 Ford F 350 Super Duty

1 Answer

93 Ford F250 5.8 L No Charge


not cpu.
Do not field out the field wire.
Is the alternator ight coming on?
If you rev engine, does charging system start working?
There is a resister wire that provides voltage to the field circuit. If the resister is bad, you will only get voltage to the field through the dash alt. light bulb when you push enough voltage through it.

I don''t have 1993, but here is 96:

Generator with Integral Rear Mount Regulator, Internal Fan Type With the key in the RUN position, voltage is applied through the charge indicator lamp I circuit to the voltage regulator. This turns the voltage regulator on, allowing current to flow from the battery sense A circuit to the generator field coil. When the engine (6007) is started, the generator (GEN) (10346) begins to generate alternating (AC) current which is converted to direct (DC) current by the rectifier internal to the generator. This current is then supplied to the vehicle's electrical system through the battery positive voltage (B+) terminal located on the rear of the generator. Once the generator begins generating current, a voltage signal is taken from the stator and fed back to the voltage regulator S circuit, turning off the charge indicator/lamp. With the system functioning normally, the generator output current is determined by the voltage at the A circuit. This voltage is compared to a set voltage internal to the voltage regulator, and the voltage regulator controls the generator field current to maintain proper generator output. The set voltage will vary with temperature and is typically higher in the winter than in the summer, allowing for better battery recharge. With the system functioning normally, the generator output current is determined by the voltage of the A circuit (battery sense voltage). The A circuit voltage is compared to a set voltage internal to the voltage regulator, which controls the generator field current to maintain proper output. The set voltage will vary with temperature and is typically higher in the winter than in the summer, allowing for better battery recharge in the winter and reducing the chance of overcharging the battery in the summer. A fuse link is included in the charging system wiring on all models. The fuse link is used to prevent damage to the wiring harness and generator if the wiring harness should become grounded, or if a booster battery with the wrong polarity is connected to the charging system.
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  • System Does Not Charge
  • Loose or worn drive belt.
  • Open/voltage drop in Circuit 38 (BK/O).
  • Open/voltage drop in Circuit 36 (Y/W).
  • Open/high resistance in Circuit 904 (LG/R).
  • Damaged regulator.
  • Damaged generator battery


Apr 13, 2009 | 1995 Pontiac Sunfire

1 Answer

Coach battery not charging using shore power.


u have a simple problem If uare not holding charge...... u have a leak some where man. did u install ne thing new? are thier different things applyed to the battery that could run it dead or not allow u to get the correct amount of ampigze.

Mar 12, 2009 | Ford E-350 Cars & Trucks

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