2003 flhtcui
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Intermediate
Joined: Apr 2010
Posts: 44
Likes: 0
From: Cape Canaveral, FL
2003 flhtcui
Problems:
Brake lights and running lights were not working.
Background: No new work on bike for last 8 months.
Fuses Checked:
"lighting" fuse (ATM 15) was bad. replaced it with same. turned on power, fuse snapped just that quick.
Troubleshooting:
Unplugged the rear lights before the aftermarket brake light flasher. Turned on power, Still snapped.
Took off flairing unpluged the running lights. Turned on power, fuse OK. However the brake light stays on. Even when I remove the relay.
Brake relay is clicking as it should, if I push the front or rear brakes. However the brake lights stay on.
I know everyone is going to say check the bulb.
Here is my problem, if it was the bulb or lighting to the rear as the issue then why did the fuse blow even when it all was disconnected and how come it does not do it now that the front running lights are disconnected.
If it is a problem with the lever or the rear switch then why does it stay on when the relay is removed?
Brake lights and running lights were not working.
Background: No new work on bike for last 8 months.
Fuses Checked:
"lighting" fuse (ATM 15) was bad. replaced it with same. turned on power, fuse snapped just that quick.
Troubleshooting:
Unplugged the rear lights before the aftermarket brake light flasher. Turned on power, Still snapped.
Took off flairing unpluged the running lights. Turned on power, fuse OK. However the brake light stays on. Even when I remove the relay.
Brake relay is clicking as it should, if I push the front or rear brakes. However the brake lights stay on.
I know everyone is going to say check the bulb.
Here is my problem, if it was the bulb or lighting to the rear as the issue then why did the fuse blow even when it all was disconnected and how come it does not do it now that the front running lights are disconnected.
If it is a problem with the lever or the rear switch then why does it stay on when the relay is removed?
Thread Starter
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Intermediate
Joined: Apr 2010
Posts: 44
Likes: 0
From: Cape Canaveral, FL
The brake relay switch still clicks when I pull the front brake lever or push the brake pedal. So if the front switch was "stuck" wouldn't the brake relay be stuck on and not make the clicking noise?
Advanced
Joined: Jan 2007
Posts: 71
Likes: 0
From: Sunny Phoenix
I kept popping running light fuse- I found the insulation chafed on the wire leading to the front fendertip running light (near where it passes through the front fender) under a wire-tie that held it to the brake line. Good luck.
Road Warrior
Joined: Mar 2011
Posts: 1,378
Likes: 2
From: Macon, GA USA
Did you by chance have the throttle or master cylinder of not long before this started happening?
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Road Warrior
Joined: Mar 2011
Posts: 1,378
Likes: 2
From: Macon, GA USA
I had this same problem one time.
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Thread Starter
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Intermediate
Joined: Apr 2010
Posts: 44
Likes: 0
From: Cape Canaveral, FL
I did no work before this. It just happened.
If I understand the way relays work is the switch is activated and then the brake light comes on. So if the switch was stuck on then the relay would be activated which it is not. So, what is the point of tearing apart something else and chance breaking it, if logic says that it cannot be the issue.
If I understand the way relays work is the switch is activated and then the brake light comes on. So if the switch was stuck on then the relay would be activated which it is not. So, what is the point of tearing apart something else and chance breaking it, if logic says that it cannot be the issue.
Stellar HDF Member
Joined: Aug 2012
Posts: 2,664
Likes: 184
From: Indiana, USA
Sounds like you have 2 problems, brake and run lights. You found a short in the front fender liight wire so may have solved the running light problem. Electrical shorts are difficult to trace so the best you can do is find a logical place to cut your work in 1/2. If fixing the fender light solved the blown fuse you have solved 1 of your 2 problems. Maybe the brake light has been stuck on awhile and you just didn't know it. Put it all back together and find the logical split 1/2 between the tail light and fairing. I would unplug the aftermarket brake module and plug back factory and if you have brake lght on off then the module may have failed.