You need thesehttp://www.ebay.co.uk/itm/2x-P21W-BA15s-382-12v-Amber-Orange-Indicator-Light-Car-Bulbs-Opposite-Pins-/270962564961?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3f16a09f61Old indicators have clear 382 bulbs with opposite pinsNew indicators have orange 581 bulbs with offset pinsYou need the orange 382 bulbs to get the old indicator holder to work properly in the new units.