FV432 right indicator erratic

[Deathwing]

The right indicator doesn't always flash - see video attached. Weird thing is that sometimes it does, or it flashes briefly then stops flashing. Left indicator works fine. Any thoughts what it could be?

[fv1609]

Does it still do it with another bulb? I once had a similar problem due to a broken filament  Although it looked intact & there was continuity confirmed by an ohmmeter . But when supplied with volts the heat of the filament caused the end of the broken filament to fall away & break the circuit. Once turned off the filament cooled & made contact again.

Sidelights & turn lights are always prone to poor earth problems. Also check that front & rear bulbs are the correct wattage as that determines the current drawn through the bi-metallic strip in the flasher unit to function correctly.

[fv1609]

I was wondering if one of your bulbs was like this with an intermittent break?

[Deathwing]

Good ideas; I will look into switching the bulbs round tomorrow as that's an easy one to check. If it comes to investigating the wiring/earthing that becomes harder! Vehicle electricians happy to work on it are hard to come by for some reason

[David Herbert]

I am very impressed that Clive has a photo of a bulb with a broken filament. I just throw them away !

David

[fv1609]

6 minutes ago, David Herbert said:

I am very impressed that Clive has a photo of a bulb with a broken filament. I just throw them away !

David

Ah but I took a photo and then I threw it away 🙂

[fv1609]

14 hours ago, Deathwing said:

Vehicle electricians happy to work on it are hard to come by for some reason

If you were nearby I could help you. I don't have the circuit diagram for a 432 but it may not be a straightforward flasher to turn lights. Although this was used as an add-on for Ferrets, in a Pig the flasher drives a relay & despite being a 24v vehicle the turn lights are 12v.

[Deathwing]

Thanks - we've replaced the flasher in case that was the issue but hasn't helped. Out of curiosity, where are you located Clive?

[fv1609]

8 minutes ago, Deathwing said:

Out of curiosity, where are you located Clive?

In NATO speak GB-CMN = Sir Gaerfyrddin = Carmarthenshire in (real) South Wales. Where are you?

[Deathwing]

Ahh, I'm in Norwich. Opposite side of the country