Indicator fuse blowing in hot weather

[Intruder]

Hiya CTScott, thanks for replying.

I've found a few on ebay for ~£10 but they're all used, preferably I'd want a new one so I may have to end up going the ebay route although I'm waiting for a call back from a local garage and a car parts specialist.

As for how often it occurs, I wouldn't say it's the fuse is guaranteed to blow when it's hot/sunny, sometimes the fuse blows straight away sometimes it wont blow till about 20 minutes after replacing it, it's been incredibly frustrating to try diagnose this issue

And yes, checked each indicator bulb including the small ones on the side of the wings, I've done this twice now and can find nothing wrong short of replacing the wiring loom entirely.

So when you say switch, do you mean from the stalk on the steering wheel column?

[CTScott]

Originally Posted by Intruder

Hiya CTScott, thanks for replying.

I've found a few on ebay for ~£10 but they're all used, preferably I'd want a new one so I may have to end up going the ebay route although I'm waiting for a call back from a local garage and a car parts specialist.

As for how often it occurs, I wouldn't say it's the fuse is guaranteed to blow when it's hot/sunny, sometimes the fuse blows straight away sometimes it wont blow till about 20 minutes after replacing it, it's been incredibly frustrating to try diagnose this issue

And yes, checked each indicator bulb including the small ones on the side of the wings, I've done this twice now and can find nothing wrong short of replacing the wiring loom entirely.

So when you say switch, do you mean from the stalk on the steering wheel column?

Correct on the switch being the stalk. It may be that the lubricant within the stalk has carbonized, where it becomes somewhat conductive.

Another thing that would help to diagnose it would be to check is the current draw. This would require a multimeter that has an ammeter mode. You could then pull the fuse and insert the ammeter in series with the fuse. Then you can check the current draw through the fuse while flashing the indicators. If the current draw is close to the fuse rating on one side, then you reduce your checking to just that side. You can also try jumping the wires for each direction to bypass the stalk and if the current draw was significantly less, then you would know that the stalk was the issue.