Brake Light Issue - Wrist Twisters
 
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post #1 of 13 Old 08-11-2015, 04:39 AM Thread Starter
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Brake Light Issue

Brake Light Issue
I was returning from a ride the other day and I noticed that my EFI light was flickering. My buddy also told me my headlight was out. I pulled the bike apart the other night. I decided to pull out the PCIII, because I never had the money to get it tuned and I also didn't like how the wiring harness was wedged under the tail.
Make a long story short, pulling the PCIII out fixed the EFI problem and resoldered the short in the ignition resolved my initial issues. I reassembled the bike and I noticed I don't have brake lights, but I do have tail lights. I did notice that I had a 2 wire plug not plugged into anything near the EFI. Did I miss something?

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post #2 of 13 Old 08-11-2015, 04:45 AM
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Common issue is the rear brake switch sticking in the closed position, so most likely your brake light is staying on all the time.

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post #3 of 13 Old 08-11-2015, 04:46 AM
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Quote:
Originally Posted by mercenario27 View Post
Brake Light Issue I was returning from a ride the other day and I noticed that my EFI light was flickering. My buddy also told me my headlight was out. I pulled the bike apart the other night. I decided to pull out the PCIII, because I never had the money to get it tuned and I also didn't like how the wiring harness was wedged under the tail. Make a long story short, pulling the PCIII out fixed the EFI problem and resoldered the short in the ignition resolved my initial issues. I reassembled the bike and I noticed I don't have brake lights, but I do have tail lights. I did notice that I had a 2 wire plug not plugged into anything near the EFI. Did I miss something?
I had the same concern last time I really dug into mine... That two wire connector is the diagnostic port and isn't connected to anything
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post #4 of 13 Old 08-11-2015, 04:59 AM
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Quote:
Originally Posted by mercenario27 View Post
Brake Light Issue I was returning from a ride the other day and I noticed that my EFI light was flickering. My buddy also told me my headlight was out. I pulled the bike apart the other night. I decided to pull out the PCIII, because I never had the money to get it tuned and I also didn't like how the wiring harness was wedged under the tail. Make a long story short, pulling the PCIII out fixed the EFI problem and resoldered the short in the ignition resolved my initial issues. I reassembled the bike and I noticed I don't have brake lights, but I do have tail lights. I did notice that I had a 2 wire plug not plugged into anything near the EFI. Did I miss something?
Did you remember to plug the brake light switch on the front master cylinder back in?

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post #5 of 13 Old 08-11-2015, 05:11 AM Thread Starter
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Quote:
Originally Posted by marylandmike View Post
Common issue is the rear brake switch sticking in the closed position, so most likely your brake light is staying on all the time.
My rear switch was acting up, not closing the circuit. replacing the rear brake light switch was on my to do list. Maybe your right its stuck closed now and brake lights are on.

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post #6 of 13 Old 08-11-2015, 05:14 AM Thread Starter
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Quote:
Originally Posted by badmoon692008 View Post
I had the same concern last time I really dug into mine... That two wire connector is the diagnostic port and isn't connected to anything
I figured it was a diagnostic port, but after discovering my brake light issue I started to doubt myself.

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post #7 of 13 Old 08-11-2015, 05:16 AM Thread Starter
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Quote:
Originally Posted by CB700S View Post
Did you remember to plug the brake light switch on the front master cylinder back in?
I did unplug the switch and I think I hooked the two wires back up on the on the correct post. Will it matter if I got the two mixed up?

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post #8 of 13 Old 08-11-2015, 05:22 AM
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It does not matter which wire is connected to which post. It is possible with the rubber boot to not seat the wire on a post and think you have it installed correctly. The boot can hold the wire in between posts without making a connection.

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post #9 of 13 Old 08-11-2015, 06:46 AM
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Quote:
Originally Posted by mercenario27 View Post

My rear switch was acting up, not closing the circuit. replacing the rear brake light switch was on my to do list. Maybe your right its stuck closed now and brake lights are on.
If it is your rear brake switch, I would replace it with a hydraulic switch, which replaces the banjo bolt at the rear master cylinder. Much more reliable.

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post #10 of 13 Old 08-11-2015, 07:21 AM
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Quote:
Originally Posted by marylandmike View Post
If it is your rear brake switch, I would replace it with a hydraulic switch, which replaces the banjo bolt at the rear master cylinder. Much more reliable.
Probably so Mike. In the years and 1000's of miles on my 9er, the rear brake light switch is the only thing I've ever had to replace (other than tires and brakes)

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post #11 of 13 Old 08-12-2015, 03:18 AM Thread Starter
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It was the brake switch, it was stuck on. Do you have a part number for a hydraulic switch. is it a bolt on replacement? Thanks for all your help.

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post #12 of 13 Old 08-12-2015, 04:02 AM
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post #13 of 13 Old 08-12-2015, 09:12 AM Thread Starter
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Quote:
Originally Posted by marylandmike View Post
Kewl Beans

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