harley davidson battery

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Battery Box Removal

Would like to know how to remove the battery box? Thanks! Via Email This is really simple. First, remove your seat and disconnect your battery, the negative cable 1st. Best to disconnect the negative cable from the frame, as opposed to the battery on this model m/c. Use a 1/2″ socket to remove these two…

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Engine and Oil Lights Flicker

My Engine and Oil Lights come on intermittently when my voltage drops for some unknown reason. This does not happen all the time and sometimes for very short periods. If when I first crank up I have a low voltage registering on my gauge I can ride until I hit a bump in the road…

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Winter Projects

Hi, first off I love this website and all the work you guys do, it really takes a lot of the guess work out of doing your own maintenance. I have two questions as I am currently in the middle of some winter time maintenance and modifications. 1. Is it imperative that I disconnect the…

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Harley Davidson Not Starting

I have a 2010 ultra classic with ABS. It is not starting. The battery voltage is 12.75 off the battery. When I turn the main switch on, I get a drop to 12.5, and when the kill switch is turned on, I get a drop to 12.38. The self test goes out and hit the…

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Battery Replacement with YUASA

Loose Positive Cable Meltdown Since 2004 our talented techs have told us and shown us what loose battery connections can do. Check it out in this photo. I carry a 10 mm wrench with me to check battery connections on long rides. I must have forgotten to check them on one ride and the positive…

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Battery or Fuse

2013 Sportster Seventy-Two recently I replaced the battery due to the previous one being dead and not holding a charge. However now after the new battery is installed when I hit the ignition nothing happens. The lights are on and there is no do dimming or any of the other signs of a dead battery…

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Barely Starts

I have a 2014 FatBoy. Having trouble starting it up not sure if it’s the battery or what is going on? One day it will start right up the next day it acts like the battery is low. Slowly cranks up and barely starts it. On the gauge it says in the low range with…

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Load Test Battery

I’ve pulled enough hair out I need help. I have replaced battery, ignition relay, starter, checked connections, looked for loose wires. The bike still won’t start! The battery is at 12.4 volts when I take charger off. I try to start bike it might turn over a couple times then acts like battery is to…

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Harley Negative Cable

The Harley service manual directs us to remove the negative battery cable behind the crankcase. On your video Bob pulls out the battery a bit, accessing the negative post and removes the cable from there. Is the cable long enough to do that? It would make it a lot easier because getting to the Harley…

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Harley Battery Care

Q: I have been told many different ways how-to maintain a Harley battery. I live in Florida and not able to ride as much as I would like. My last battery lasted about two and a half years. I would charge it about once a month before I would go for a ride. Now I…

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