[Aussie Mike]

I sourced a Flasher can from Narva designed specifically for LEDs. It's an electronic unit that doesn't rely on the load to regulate the speed it flashes. I also wanted a square can that would plug into a standard relay socket. this keeps the wiring tidy. It's a fairly new unit to the market and your auto parts supply might not have seen one before.

It was a bit pricey at about $49 but it'll probably never need replacing and it solves my indicator headaches. I'll find the part number if you're interested.

Cheers