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Author Topic: 1976 CB550F: Adding Turn Signals  (Read 165 times)

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Offline magner

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1976 CB550F: Adding Turn Signals
« on: November 06, 2018, 12:13:41 am »
Hello, first time poster and first bike owner! Bought a 1976 CB550F that the previous owner had new wiring put in and had removed the turn signals. I’d like to add back some m.blaze Pins on just the rear for some safety.

Can anyone give help go over what I’ll need to do to wire these in? I know I need to get a flasher relay, but I’m not sure what to connect everything to. I’m not sure that the wiring diagram will still be valid as it’s been rewired. I attached a photo of what’s under my seat in case it’s any help! I know specific help would be impossible, but any general things to look for to connect would be very helpful as I’m still learning all of the components of the electrical system and what they do. Anything like locating which cable I can splice into for power, or what to ground, or where to connect flasher relay relative to signal switch would be awesome! Thanks guys.

Offline Deltarider

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Re: 1976 CB550F: Adding Turn Signals
« Reply #1 on: November 06, 2018, 01:56:04 am »
Magner, the wiring diagram for your model is in the Honda manual that you can download here in ten parts: http://forums.sohc4.net/index.php?topic=17788.0
P.169 in https://www.classiccycles.org/media//DIR_1653304/DIR_1653404/DIR_1653507/ecc6759db0a214d5ffff8824ffffe41e.pdf in particular.
« Last Edit: November 06, 2018, 02:00:18 am by Deltarider »
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Offline Bodi

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Re: 1976 CB550F: Adding Turn Signals
« Reply #2 on: November 06, 2018, 03:24:09 am »
That wiring is not super bad but it looks like no original wiring remains. Where are the regulator and rectifier?
If the entire harness was removed you need to add wiring for signals. If it uses the original switchpods you won't need to add a signal switch at least.

Online calj737

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Re: 1976 CB550F: Adding Turn Signals
« Reply #3 on: November 06, 2018, 05:24:16 am »
Instead of adding Pins at the rear, you might be better off using their Discs on the front, at the end of your bars. That way, the light is outside of your body from the front and the rear, providing indication to those ahead and behind you. Also, it might be easier to get power to them as the front end of your bike may have more available sources of wires to activate them.

How about a snapshot of the bars, switch pods, and gauge cluster?
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Offline magner

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Re: 1976 CB550F: Adding Turn Signals
« Reply #4 on: November 07, 2018, 01:19:08 pm »
How about a snapshot of the bars, switch pods, and gauge cluster?
:-[

Thanks for the help, heard a pic of the front end! I definitely need to add a switch but I need one that is only for turn signals, and not including horn and lights etc. I’m considering doing the simple 2 button switches that will route inside the bars for a minimal look. I like the pins better than the discs, but mainly I think the discs are too expensive for me  :-[ . Any help on what I need to locate to run a new power line from? And then the switch wires to a flasher which will wire somehow in between the bulb and power? Thanks again for any help!!

Offline bryanj

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Re: 1976 CB550F: Adding Turn Signals
« Reply #5 on: November 07, 2018, 01:28:01 pm »
Take a power from the black wire on the ignition switch via a fuse to the relay then from relay to switch(es) then onto indicators not forgetting to ground the other side
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline magner

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Re: 1976 CB550F: Adding Turn Signals
« Reply #6 on: November 07, 2018, 02:50:29 pm »
Take a power from the black wire on the ignition switch via a fuse to the relay then from relay to switch(es) then onto indicators not forgetting to ground the other side

Thanks, I think I get it! How far off am I with this diagram? Also could you describe what you mean by “take power via a fuse?” Apologies I have pretty limited experience with electronics.

Offline bryanj

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Re: 1976 CB550F: Adding Turn Signals
« Reply #7 on: November 07, 2018, 02:54:17 pm »
Diagram looks good and on it you have put a fuse in exactly the correct possition. The wording means take the power wire through a fuse, via is just another way of saying it like if you were driving between two places a took a diversion you would be going "via" the diversion.
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

Offline magner

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Re: 1976 CB550F: Adding Turn Signals
« Reply #8 on: November 07, 2018, 04:20:11 pm »
Diagram looks good and on it you have put a fuse in exactly the correct possition. The wording means take the power wire through a fuse, via is just another way of saying it like if you were driving between two places a took a diversion you would be going "via" the diversion.

Awesome, this is exactly the guidance I was looking for! Do you happen to know what kind of flasher relay I would need? I assume an LED specific one, but not sure if I need 2 or 3 prong. Also what kind of fuse should I buy for this application?

Offline carnivorous chicken

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Re: 1976 CB550F: Adding Turn Signals
« Reply #9 on: November 07, 2018, 04:46:43 pm »
You might want to just have a quick look in your headlight bucket --that's where the original ends for your turn signal wires would be, and it's just a coupe of screws to take off the headlight ring. I know that the thing is rewired around the battery, and the fact that the left hand handlebar switch (which had your turn signal switch and horn) is missing doesn't bode well, but your right had switch looks to be there (starter, light switch). You never know... and like I said, not much effort to have a look.
« Last Edit: November 08, 2018, 04:05:13 am by carnivorous chicken »

Offline bryanj

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Re: 1976 CB550F: Adding Turn Signals
« Reply #10 on: November 08, 2018, 02:45:06 am »
Cant help with relay as never worked with led except on artic trailers. I would think fuse should be no more than 5amp.
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

 

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