SOHC.co.uk Forums > CB500/550
cb500 dead short
McCabe-Thiele (Ted):
Is the replacement relay just one with two terminals?
If it is you may need to reverse the connections as one way the flashing circuit does not operate.
RGP750:
3 terminal as previous one.
McCabe-Thiele (Ted):
--- Quote from: RGP750 on May 17, 2023, 12:50:03 PM ---3 terminal as previous one.
--- End quote ---
Are you using conventional Tungsten bulbs of the correct wattage or LED's?
Is it an electronic flasher unit that works at a fixed rate irrespective of the bulb load?
Are the terminals marked differently - I suspect it might just back to front on the flashing circuit - leave the earth circuit as it is & try switching the terminals - for safety you can add a bulb type circuit test to remove any chance of blowing the flasher unit?
It will not flash if its a standard flasher unit with LED bulbs or if the bulb wattage is too low - sometimes you get a hyper fast flashing rate instead.
RGP750:
All the bulbs are as they were before the flasher unit started blowing the fuse. Obviously tracked the relay down as the culprit. and bought
a new relay (well 2 actually both different makes) .I have tried reversing the black and grey and same result with both relays.
God I hate electrics
McCabe-Thiele (Ted):
This might sound basic but are you sure the flasher units are the correct ones for your total bulb wattage & designed for a negative earthed vehicle?
When I replaced the flasher unit in my 400 I could not find the ones with three terminals so fitted a two terminal unit.
I am thinking that you might have the later car type flasher unit they will be marked with an earth designed for modern cars that are positive earth.
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