Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: jon stead on December 07, 2017, 08:08:35 PM
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Changed the clock lights for LED ones. Look the dogs.
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That looks snazzy I bet it doesn't look as good in my corroded dented clocks.
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That looks snazzy I bet it doesn't look as good in my corroded dented clocks.
The photo doesn’t do it justice. It looks even better in the flesh
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Nice John
Did you find ones that fit in the existing holders or did you do some adaptation
Source would be a help
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Nice, and saves some Watts here and there.
The only issue's with led's is their colour temperature. The colour temperature of the original bulbs is around 2200 to 2700 Kelvin, the modern white led's have generally a colour temperature around 4000 to 5000, and sometimes 6000 Kelvin. In plain English, way to white / blueish. For me, one of the charms of these bikes is the old fashion "warm" white colour of the face plates. The warm white gives me that retro-look when riding it. Next to that, most modern LED's are way too bright.
I was also looking for replacement for my clock lights (for my 1966 CB450) and tried a few before I was satisfied with the result. If one can find LED's with a colour temperature of 2200 to 2700 K for the faceplates you're done, but in most cases, the colour temperature is not mentioned on web-sites or shops (except for head lights and indoor LED replacements).
I found that yellow LED's give almost the same warm light as the old bulbs did. For the neutral I choose amber (if you're buying green, it's just too green), and orange for the winker indication, or in case of my bomber, for the hi-light.
Jensen
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I like that, very cool 8).
Details how you did it please Jon and and materials/suppliers. I'd like to modify the CB250RS clock lighting if possible.
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Nice John
Did you find ones that fit in the existing holders or did you do some adaptation
Source would be a help
Sorry, I can’t remember where I bought them, online somewhere, and yes they were just a straight swap for the originals.
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I like that, very cool 8).
Details how you did it please Jon and and materials/suppliers. I'd like to modify the CB250RS clock lighting if possible.
Sorry, I don’t recall where I got them but they were a straight swap for the originals.
I’ve attached a picture of the lamp in the reply above.
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How did you wire the indicator light as the indicators change polarity left and right. Therefore the LED should only work on one side as it's a diode that only allows current in one direction?
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How did you wire the indicator light as the indicators change polarity left and right. Therefore the LED should only work on one side as it's a diode that only allows current in one direction?
I’ve only put LED lamps in the speedo and rev counter
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If you wire in two LEDS back to back they'll work in both directions.
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If you wire in two LEDS back to back they'll work in both directions.
O yeah, why didnt I think of that. Just getting the drill out to make the hole twice the size. ;D ;D
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How did you wire the indicator light as the indicators change polarity left and right. Therefore the LED should only work on one side as it's a diode that only allows current in one direction?
Roy I must be really dumb but looking at the 500 wiring diagram I don’t for the life of me see how they change polarity can you expand
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The bulbs are a BA9S fitting just look for BA9S LED BULBS on flea bay, there are loads 👍👍
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Perhaps the 500 is wired differently? Would be interesting to test the 500 with a multimeter to see if they do change polarity. The usual way to wire LED's is with a fused direct live feeding into 2* 12v relays, then the indicator connectors 1 to each relay switching the output to the led lamp. A lot of work to just change an indicator repeater bulb to LED. I took mine back out again and re-fitted a standard bulb. Not actually sure why they reverse polarity, like you I couldn't understand from the wiring diagram how it was happening, but it was. Maybe someone like Ash could throw some light on it.
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Perhaps the 500 is wired differently? Would be interesting to test the 500 with a multimeter to see if they do change polarity. The usual way to wire LED's is with a fused direct live feeding into 2* 12v relays, then the indicator connectors 1 to each relay switching the output to the led lamp. A lot of work to just change an indicator repeater bulb to LED. I took mine back out again and re-fitted a standard bulb. Not actually sure why they reverse polarity, like you I couldn't understand from the wiring diagram how it was happening, but it was. Maybe someone like Ash could throw some light on it.
If you want to use led lamps in the indicators, don’t you just need to change the indicator relay for one that’s suitable for leds?
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Yes, the original type rely on the resistance of the bulbs to discharge a capacitor.
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I'm not making this up, it's very well documented on t'internet. They honestly are opposite polarity.
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Roy
I am really interested in this question. I am no electrical guru but I notice the 500 uses a 2 wire flasher relay whilst the 550 uses a 3 wire relay.
Be most interested if someone can clarify this point
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Roy
I am really interested in this question. I am no electrical guru but I notice the 500 uses a 2 wire flasher relay whilst the 550 uses a 3 wire relay.
Be most interested if someone can clarify this point
I agree Paul. Been a mystery to me for a while. Some bikes do this and others don't, but tried two of mine CB350F and GS1000 and they both reverse polarity. Jump in anytime you can Ash.
Sent from my Nexus 6 using Tapatalk
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Roy
I am really interested in this question. I am no electrical guru but I notice the 500 uses a 2 wire flasher relay whilst the 550 uses a 3 wire relay.
Be most interested if someone can clarify this point
All the SOHC sub looms have 3 wires for the relay ;) On the two pin relays you just leave off the ground green wire.
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When I get home tonight I am going to check my CB750 to see if that does the reverse thing as well. Got me re-interested in this again now as I didn't find an answer last time, just took the LED's back out and refitted a bulb.
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Roy
I am really interested in this question. I am no electrical guru but I notice the 500 uses a 2 wire flasher relay whilst the 550 uses a 3 wire relay.
Be most interested if someone can clarify this point
Maybe it's because the CB550 has two idiot lights where the CB500 has only one? Just a guess.
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Relay depends on country, US was 2 wire UK 3 wire, as to the single idiot light on the 500 it don't exactly change polarity, it gets power from the ones that are flashing and grounds via the ones that arnt
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Interesting question! as Trig says all CB's have a 2 wire indicator relay (3rd wire green-earth/ground) I think the answer starts with the orange & sky blue wires from the indicator switch (as image CB750) There are electronic devices to do the job, but not sure as yet, how its done.
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It's done by magic Al, you wouldn't understand.
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Magic indicator LED's...then please 'enlighten'...would be a nice change from the BA9s lamps