Question about 2005 Harley Davidson FLHR - FLHRI Road King

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Put a new battery in a 2005 Road king and it is draining the amps and killing the battery. the voltage regulator is good and the starter is good and the battery is brand new.

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Is it draining the battery when parked up or riding with the lights on? If it is with the lights on and riding, check the altenator if when parked up check if there is a wiring problem or a faulty alarm if fitted.

Posted on Mar 28, 2011


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Posted on Jan 02, 2017


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My 2004 custom road king died crusing down the road at that time i had no lights no starter action nothing at all . i replaced the battery still got no starter action just lights no turn signals .

Check that you have put all the active wires back on to the battery. (Mine had 2 separate wires) Check the "kill" or stop switch on the handlebar hasn't been accidently turned on.

Sep 04, 2017 | Road Motorcycles

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2004 Harley Davidson FLHR - FLHRI Road King quit running

Hi, Willie and the usual suspects are:
1. Severely discharged or a damaged battery must have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
2. Faulty alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Faulty main circuit breaker or ignition switch, check for loose connections and continuity.
5. Faulty system and or ignition relay, check for continuity.
6. Faulty ignition coil, ignition/electronic module.
7. Faulty CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Faulty neutral, side stand or clutch lever safety switch.
10. Fuel tank empty
11. Fuel tank contaminated with ethanol sludge.
12. Water or dirt in the fuel system, or clogged filter.
13. Restricted, blocked or kinked fuel line.
14. Faulty fuel pump.
15. Faulty pressure regulator.
16. Faulty or clogged fuel injectors.
17. Lean angle switch is faulty or needs adjustment.
For more information about your issue and valuable "FREE" downloads that you need for viewing or printing please click on the blue links below and for more specific information or questions at no charge please feel free to contact me at Good luck and have a wonderful day.
Road King quit running while riding
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Sep 04, 2017 | 2004 Harley Davidson FLHR - FLHRI Road...

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To test your regulator, first charge your battery to full charge. You'll need a DVOM (digital volt ohm meter). Connect the DVOM "across" the battery by connecting the red meter lead to the positive post of the battery and the black meter lead to the negative post of the battery. Put the meter's function selector switch in DC VOLTS, 50 VOLT RANGE. Start the engine and bring it to a high idle. After about a minute or so, you're meter should read between 14.5 and 15.0 volts. If not, proceed to the next step.

If you are not getting the correct voltage to keep your battery charged, you need to check the output of the stator. Look on the front of the engine near the end of the oil filter and you'll see the plug from your voltage regulator plugged up there. Unplug the plug and look down into the engine side of the plug and you'll see two metal contacts. This is where we are going to test the output of you alternator. First, put your meter's function switch to AC VOLTAGE, 50 VOLT RANGE. Notice that we are testing for AC voltage as opposed to DC like we did last in the last test. This means it doesn't make any difference which meter lead goes to which contacts. Start the engine and put one of the meter's probes on each of the metal contacts. Make sure you do not touch the meter probe to each other or to the engine case. Bring the engine to a high idle and your meter should read at least 30 volts AC voltage.

If you do not have the 30 volts AC at the engine, your stator is bad. If you do have at least thirty volts at the alternator but less than 13.0 volts at the battery, your regulator is bad. Make sure your regulator is properly grounded where it bolts to the frame. I usually put one of those "star lockwashers" between the regulator and the frame on both bolts to make sure I've got a good ground. If the regulator is not grounded properly, it won't work.

Good Luck

Mar 03, 2011 | Harley Davidson FLHR-FLHRI Road king...

1 Answer

How to install the battery on a 2005 HD Road King Custom. Where is it? How to get to it?

Since I've never installed a battery in this year model road king, I would suggest this. Find the battery cable that connects to the starter. Follow the battery cable and see where it goes. If it goes up, take the seat off. If it goes down, take the side covers off.

Good Luck

Jan 12, 2011 | 2005 Harley Davidson FLHRS - FLHRSI Road...

2 Answers

I'm getting excessive current draw with the key off car parked (1996 grand cherokee) thru the 50 amp fuse (#11 in the "power distribution center") Several items are listed including the on board...

A loose positive battery cable connection will kill a battery in short order. Tighten all the connections including the starter (usually hard to get at - and most likely the culprit).

It is a good idea to check the cables periodically for corrosion, this can also kill your battery. Once you have made sure the connections are free of corrosion and have a tight fit you can recharge your battery or replace it with a new one if the battery is damaged from being undercharged.

Another thing that will kill your battery is the charging system voltage regulator - if it dies your battery will run out of power just running the engine. Modern cars have this part in the alternator and you may or may not be able to replace the regulator. Take your alternator to a parts store or a shop and have it tested. If it is bad and you put a new battery in the car, the new battery will die.

Nov 20, 2017 | 1996 Jeep Grand Cherokee

1 Answer

Vintage harley cutout relays keep frying and headlight keeps blowing out thinking my 32 e gen has too much output but I have it dialed all the way down. maby i need a whole bunch of lights to burn up all...

Your voltage regulator is not working properly. You may have to convert to a more modern style regulator. Get a voltmeter and measure voltage at the battery with bike off, should be 12 to 12 1/2 volts. Then measure voltage with bike at idle and then at high RPM, should never go over 14 and 1/2 volts. Also bad connections, dirty, rusty, loose etc will cause the gen to work harder and put out high amps. Make sure you have good clean connectors at the battery posts also. GOOD LUCK.


Jul 03, 2009 | 2008 Harley Davidson FLHRC Road King...

1 Answer

1995 buick draining battery

take it in to an accredited auto electrician and have the voltage regulator checked
batteries die from under charge or overcharge and that is the job of the regulator to keep the voltage at 14.5-14.8 volts DC

Jul 23, 2017 | 1995 Buick Park Avenue

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