Dimming lights
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Tourer
Joined: Oct 2009
Posts: 471
Likes: 19
From: Grapeland Texas
Dimming lights
I was coming home tonight and I noticed my lights getting real dim then would brighten back up. It did it also on bright light too. I would turn off my aux. lights and still my head light would go dim. I have an '08 fatboy and this is the 1st time in a while that I rode at night so I don't know how long it has been doing it. This is the original battery and I am pretty sure it is needing to be replaced soon. Does anyone know what could be causing this? Any help would be appreciated.
Ultimate HDF Member
Joined: Oct 2007
Posts: 5,257
Likes: 6
From: Leander Texas
if it dims and then bright i would say loose cable first but 08 would have a 3 or 4 year old battery depending on when the bike was made. my 07 was made 6/6/06 and battery acted up at 3 year from that date. a bad battery can make your charging system go bad.
Cruiser
Joined: Jan 2010
Posts: 151
Likes: 0
From: Wichita, KS
Just went through this with my Dyna. After watching the dealer mechanic run thorugh his "checklist" and then replace the voltage regulator in hopes that that would fix it. I took my battery and battery box out to find the battery connection on the starter and the two main ground connection to the frame had corrosion on them. I cleaned them up, and no more intermittant dimming. And the bike starts faster now also.
Must have been that frog strangling flood I drove home in a couple months ago. I even had water in the horn.
Must have been that frog strangling flood I drove home in a couple months ago. I even had water in the horn.
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