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Author Topic: Reversed front blinker.... sometimes (Solved)  (Read 574 times)

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Offline Nstillwell

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Reversed front blinker.... sometimes (Solved)
« on: October 30, 2022, 12:37:45 PM »
I have a 74 CB550 with the headlight on/off switch.
My blinkers work as they are supposed to.... Until I turn on the headlights. Once I switch my headlights on with the handlebar switch, the wrong front blinker activates when I hit the switch. So they flip flop on the front... Weirdly, the correct rear blinker activates with the headlight on and off.

I have poured over the wiring diagram but the blinker part is not super clear to me. I pulled the wiring apart in the headlight and the wires are all connected as they are supposed to be. I am normally not confused over wiring but this has me stumped. I know, I should just disconnect the front blinkers. Anyone ever run into this?
« Last Edit: November 05, 2022, 09:56:53 AM by Nstillwell »
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Offline newday777

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Re: Reversed front blinker.... sometimes
« Reply #1 on: October 30, 2022, 05:46:16 PM »
Do you have the ground lugs inside the headlight bucket for the turn signals? If not, use a test jumper ground to the stems to see if it is a poor ground situation.
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Nstillwell

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Re: Reversed front blinker.... sometimes
« Reply #2 on: November 05, 2022, 09:56:34 AM »
Finally figured this out after pouring over the wiring diagram. I had a black wire with an small orange piece of plastic around the wire by the terminal in the headlight coming off both turn signals. They were connected to the wrong sides in the wiring bundle in the headlight. I'm not exactly sure why the correct sides lit up with the headlight switch turned off, but it works as it is supposed to now!
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Offline JDrider

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Re: Reversed front blinker.... sometimes (Solved)
« Reply #3 on: February 13, 2023, 06:43:07 PM »
Could you expand on this, I’m having the exact same problem. All my wiring looks correct.
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JD
1975 CB550K1

Offline Don R

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Re: Reversed front blinker.... sometimes (Solved)
« Reply #4 on: February 17, 2023, 01:33:44 AM »
 Each turn signal has a running light in it, one side gets black with a blue marker and the other side gets black with an orange marker, the other filament gets fed from an orange or blue wire depending on which side it's on.
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Offline bryanj

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Re: Reversed front blinker.... sometimes (Solved)
« Reply #5 on: February 17, 2023, 03:43:02 AM »
Not quite Don, the indicator heads have 2 wires, orange/white stripeand black with orange sleeve(or solid orange). Other side is blue/white stripe and black with blue sleeve(or solid blue). Ground is through the casing, stem nut inside shell and wire on nut
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Offline JDrider

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Re: Reversed front blinker.... sometimes (Solved)
« Reply #6 on: February 17, 2023, 03:56:47 AM »
I understand the wiring, my issue ended up being broken wires touching each other in the harness.
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JD
1975 CB550K1
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