Teds new project a CB500 K1 mostly version 0.5 circa 1972.

[mickwinf]

The sidelight issue had me scratching my head too. If the side light comes on when headlamp switch is on, but not when ignition switch is in park, you probably have wrong wire to front sidelamp. It should be a brown wire, NOT brown/white (these supply tach and speedo). I did not realise that the power for sidelight/rear lamp takes a strange path, from r/h handlebar via brown/white wire back to ignition switch terminal TL1 then to TL2 which is the brown wire, then to pilot/rearlamp. when ignition switch is in park position power goes directly to TL2 for parking. If you look on the wiring diagram i sent you it makes sense. The odd blue/brown wire you have would have gone to fusebox on 400/550 so not needed on your 500.

[McCabe-Thiele (Ted)]

The sidelight issue had me scratching my head too. If the side light comes on when headlamp switch is on, but not when ignition switch is in park, you probably have wrong wire to front sidelamp. It should be a brown wire, NOT brown/white (these supply tach and speedo). I did not realise that the power for sidelight/rear lamp takes a strange path, from r/h handlebar via brown/white wire back to ignition switch terminal TL1 then to TL2 which is the brown wire, then to pilot/rearlamp. when ignition switch is in park position power goes directly to TL2 for parking. If you look on the wiring diagram i sent you it makes sense. The odd blue/brown wire you have would have gone to fusebox on 400/550 so not needed on your 500.

I think you have identified my issue Mick I have the front sidelight in the same connector as the instrument lamps.
The old side light bulb holder & short harness on my 500 looks suspiciously like an old instrument light harness.
It has a moulded bulb holder at the end - the wires are green (earth) & brown/white trace.
I have that connected with the other brown/white wires in the harness with the instrument lamps.
The plain brown wire in the harness has a feed from the right handlebar P side of the switch it is black/yellow trace on my switch iirc.

I will need to put an extra connector on this to siamese the side light into the feed from the P side of the switch. I have just done my first fit of the LED headlamp unit into the bowl spreading the wires evenly so the light unit fits okay. There is plenty of space as my LED head lamp unit is quite shallow.

I will try that in the morning and report back.

[McCabe-Thiele (Ted)]

Just done a temporary connection with some wire jammed in a connector - it all works correctly now so in the morining I need to solder in the right type of connector.

Thanks Bryan & Mick for your help - now sorted!

[Laverdaroo]

Top work Ted, well done mate


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[McCabe-Thiele (Ted)]

Thanks Roo it would have taken me longer without the fantastic  help here. Electrics are hard to diagnose remotely. 👍👍👍

[Laverdaroo]

I know mate, top back up on here though as you know. Glad it’s sorted mate


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[Bryanj]

Yup, long distance electomaconicals are the worst

[Laverdaroo]

Not for you lot it seems mate. Top sleuthing


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[Oddjob]

TBH if Ted had done some close up shots and concentrated on the wires from the switches we could have worked it out much easier. You need close pics to work out the traces on the wires, you can't tell what's what from a distance.

Bad Ted 

[Bryanj]

Ken, i cant tell the colour at close distance without my beloveds sewing magnifier!

[McCabe-Thiele (Ted)]

TBH if Ted had done some close up shots and concentrated on the wires from the switches we could have worked it out much easier. You need close pics to work out the traces on the wires, you can't tell what's what from a distance.

Bad Ted 

Had I needed the bike to go to work then it would have been a major issue - as it was just spending half an hour attaching a few wires seeing the result, bimbling about looking at the wiring diagram, blowing a couple of in-line safety fuses, swapping a few wires, testing, reading tips here, it was all sorted in 10 earth  days during that time I had Covid again & a minor operation so in reality its been just a few hours of real work. Anyway today I checked everything is wired up & all is well.

I'm under close survaillance by Wendy atm so the cylinder head & camshaft fitting will have to wait for another 6 days until I have the 10 or so sutures removed. It will be nice to have the engine buttoned up for the winter if everything goes to plan.

[Laverdaroo]

Ken, i cant tell the colour at close distance without my beloveds sewing magnifier!

I feel your pain Bryan, the older you  get the longer arms you need


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[Oddjob]

Ted, can you smell smoke???

What's the glow from the garage???

[Laverdaroo]

That’s his hydroponics set up for his pocket money


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[McCabe-Thiele (Ted)]

Roo I am growing that super weed you sent me to remove Nitrates from my fish tank its doing great - thats my hydroponics set up.
No worries about any fires in my garage as I still have the in-line blade fuses between the battery & positive lead.

Sado that I am I keep on nipping into the garage to re-check my parking lights - that is the glow below!

.500 rear led by Macabe Thiele, on Flickr

.500 Angel Eye by Macabe Thiele, on Flickr