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Author Topic: 76 CB 550 directionals  (Read 1429 times)

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Offline Maltieri12

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76 CB 550 directionals
« on: January 19, 2017, 02:45:39 pm »
I'm new to the forum! I'm working on a 76 cb550 for my first ever cafe racer conversion.  I bought after market directionals that are 2 wire and I hook them up the same way the oem 2 wire directionals were, but the new ones don't flash. When I activate the signal, they light up but then just stay on and don't flash. They're attached the same way as the oem ones. Any suggestions?

Thanks.
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Offline BomberMann650

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Re: 76 CB 550 directionals
« Reply #1 on: January 19, 2017, 03:43:23 pm »
Welcome to the forum.

Double check the wiring diagram.  The proper colored wire with the wrong ground connection will cause that issue, as well the improper color wire with the right ground.  (Happened to me)

You may also have to swap the winker relay to suit the wattage of the new lamps.
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Offline Deltarider

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Re: 76 CB 550 directionals
« Reply #2 on: January 19, 2017, 11:44:53 pm »
Quote
I'm new to the forum! I'm working on a 76 cb550 for my first ever cafe racer conversion.  I bought after market directionals that are 2 wire and I hook them up the same way the oem 2 wire directionals were, but the new ones don't flash. When I activate the signal, they light up but then just stay on and don't flash. They're attached the same way as the oem ones. Any suggestions
Originally your model had duplo (dual filament) bulbs in front to function both as indicators as well as running lights that were useless btw. I don't know about US bulbs, but here a suitable bulb would be the 21/5 Watts duplolamp that we use as tail/brakelight. So if you're gonna use them as indicators only (wise!) you'll need a simple (single filament) 21 Watts or 18 Watts bulb. Anyway, make sure those running light wires (orange/white (left) and lightblue/white (right)) do not make contact with the bulbs + pole. You haven't picked LED indicators, have you? Check your wiring scheme. Is yours a CB550K or CB550F?
« Last Edit: January 20, 2017, 12:14:07 am by Deltarider »
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Offline Maltieri12

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Re: 76 CB 550 directionals
« Reply #3 on: January 20, 2017, 06:24:39 am »
Thanks for the response.  The bike is 76 CB550F.  They are not LED, they are incandescent,I believe 12v and 10w.  I wired the rears just the same as the stock lights. (1 power, 1 ground).  I've read some different info talking about relays?  Really new to all this and figuring it out as I go! Thanks for the insight.
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Offline Deltarider

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Re: 76 CB 550 directionals
« Reply #4 on: January 20, 2017, 06:47:28 am »
Ten Watts will not be enough. You need 18-23 Watts each to make the winker relay work.
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Offline Maltieri12

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Re: 76 CB 550 directionals
« Reply #5 on: January 20, 2017, 12:12:43 pm »
Thanks everyone for the help. An EL-12 2 prong electronic relay solved the problem!
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Offline flybox1

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Re: 76 CB 550 directionals
« Reply #6 on: January 20, 2017, 01:02:18 pm »
Flashers, but no running lights....right?

Where's Duanob!?!?! ;D  :-X
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Offline Duanob

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Re: 76 CB 550 directionals
« Reply #7 on: January 20, 2017, 01:19:19 pm »
Hey I'm here. Maltier12 hit me up via PM. I have what you need.

Honda front winkers use a three wire system. You need a special harness with directional diodes to make aftermarket two wire flashers work. I put Triumph Bonnie flashers on my bike because I liked the way they look and had to make something up to make them work properly. I have a few extras I made up.
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Offline flybox1

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Re: 76 CB 550 directionals
« Reply #8 on: January 20, 2017, 01:28:42 pm »
Yes.  These are good  8)
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'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
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Offline Duanob

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Re: 76 CB 550 directionals
« Reply #9 on: January 20, 2017, 01:50:42 pm »
Thanks for the kudos Rob!  :D
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"Just because you flush a boatload of money down the toilet, doesn't make the toilet worth more",  My Stepfather the Unknown Poet

1974 CB360T
1976 CB550K2 Resurrected
1976 CB550F2 Barn Find
1979 CX500 VG "HONDA-GUZZI"
2007 Moto Guzzi Breva 750ie
2015 BMW F700GS
Another 1976 CB550K Cafe?

  __o
_- \_<,
(*) /' (*)

Offline BomberMann650

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Re: 76 CB 550 directionals
« Reply #10 on: January 20, 2017, 06:04:42 pm »
Whats this about diodes?  K or F model harness?
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Online Don R

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Re: 76 CB 550 directionals
« Reply #11 on: January 20, 2017, 08:03:24 pm »
 I think he got it working.
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Offline BomberMann650

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Re: 76 CB 550 directionals
« Reply #12 on: January 21, 2017, 09:37:39 am »
Quote from: Don R on January 20, 2017, 08:03:24 pm
I think he got it working.

Haha yup

Quote from: Maltieri12 on January 20, 2017, 12:12:43 pm
Thanks everyone for the help. An EL-12 2 prong electronic relay solved the problem!
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