This type of thing? loads on eBay 12v 21watt from memory but could be completely wrong so check your bulb before ordering any. http://www.ebay.co.uk/itm/CHROME-SILVER-AMBER-FRONT-INDICATOR-BULBS-581-BAU15S-PY21W-TURN-SIGNAL-PINS-12V-/380756347433?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item58a6d8ca29
Ok I posted the first pic/link for reference to eBay to show they make them and are readily available. http://www.ebay.co.uk/itm/CHROME-Front-Indicator-Bulbs-SILVATEC-382-OPPOSITE-Pin-/160499621119?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item255e85dcff
Yep, I would agree .... any decent motor factors shop will probably have them.
Sim, I wonder if you might use Alan Quine's in Unsworth ? ... they are not as good as they used to be as I think they have become part of a larger chain - but they are still pretty good for popular stuff. They also stock some bike stuff.
Hi, not sure about exactly those bulbs, but I bought some "chrome" plated indicator bulbs, and they sure _looked_ good, but were _very_ dim while lit, so dim, that I was not able to see if the indicator was on during the daylight ! So ended up throwing them to garbage.
After that I bought these, which were good, bright and showing almost none of the "egging": http://www.eurocarparts.com/images/products/600x600/48177516S.jpg they had wrong offset pinning, but that's not a problem, I just filed down the other pin. The bulb can hold on just fine with only one metal pin, at least in the OEM indicator. I had them for 5 years, nowadays I have leds.
Well I guess the moral of my story is, that you should somehow confirm that they actually provide enough light to be usable, because it seems, that there are some pretty low quality bulbs for sale out there. So you wouldn't waste your money, like I did.