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Indicator relays

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A question to the collective wisdom,...

The Halfords HFU200 flasher unit (4x21w) dissapeared from their catalogue a few years ago & I've just used the last of my stockpile - does anybody have a recommended replacement? (Un)helpfully the Halfords website just states 'no longer available' and offers no alternative.

I've picked up asimilar type from my local motor factor, buit their lifespan seems to vary dramatically from days to months (probably shaken to pieces), the HAlfords ones seemed to last a lot longer.I've just ordered a Lucas version from AN so I have at least one spare.

Mike

Flash Mk III Commando

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Mine gave up the ghost just as I was giving the bike the once over for MOT. I had a spare but, whilst it works, there is a delay from selecting winker, to the first flash of about 2 seconds. I had one on my rotary that had some electronic gubbins inside and it wasn't so dependant on having a good 12volts. I had to empty the water out of it after I mounted it "pins up", but once dry it worked fine again, (pins down)

Try Vehicle Wiring Products. They have a good selection of stuff but their p&p charges are a bit steep

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Paul Goff sells a reasonable flasher unit - I think it's a Honda part - for about £4. It still has the delay between selecting the indicator and the flash starting but it seems to be more robust than the Lucas version. Paul can be found at most autojumbles and he also has a website.

Colin Cheney, Leicestershire.

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If you are reasonably competent with electrics then build your own. Drive a relay from a simple timer circuit. It will cost more but:-

(1) It will get rid of the starting delay

(2) The indicators will not slow to nearly a dead halt when the revs are low and the voltage is down

(3) The remaining indicator bulb will still flash at the same frequency of between 60 and 120 per minute (UK Road Vehicles Lighting Regulations) when the other bulb fails

As an aside, a quaint detail of the Regulations permits a rate outside the range stated in (3) above in the event of a failure. To my mind, this accepts the deficiencies of the traditional flasher units.

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I use this one

Electronic hazard/flasher unit. 2/4 x 21W + 5W capacity. 3 x 6.3mm blade terminals. Supplied with wiring diagram. Can be used on both positive and negative earth vehicles.This relay has a 'blown bulb detection' feature. This means that if one of the indicator bulb fails, then the warning lamp on the dash will stop flashing. This feature also indicates if the wrong rating bulbs have been used. For this unit to operate correctly, 21W indicator bulbs need to be used.This relay is of the most common format used and will replace mechanical Lucas type units.It has 3 terminals instead of 2, the 3rd is for a warning light but as the lucas wiring has this separately handled I use it to connect a buzzer, if the buzzer does not sound then a bulb has blown..
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Thanks to John Holmes earlier post I ordered a replacement flasher unit from AES as recommended. It cost £8 and arrived in 48 hours. It works wonderfully! I didn't want the buzzer option so simply utilised 2 of the 3 available terminals for my existing wiring. I can't remember the indicators on my Commando ever being so reliable. Mind you the test has only run for 200 miles so far.....

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Mine has been working for a few years, its electronic not hot cable so if the voltage drops the flash rate is unchanged, now that all my bulbs other than the flasher bulbs are LED this is no longer a problem but before with the Lucas version if I was waiting at traffic lights with the flashers on ticking over with the headlamp on the flashing slowed and then just stayed on. Next scheme is to going for a timed on, so the flashing stops after a set number of seconds in case I forget to turn them off, the buzzer cannot be heard above the wind noise on overtakes.

 


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