In my experience, the sidelights at the front (501's) were the only one's to cause any real issues for me with the fault indicator light because of LED's - everywhere else (boot, reg plate, indicators on the side) has no issue but these resistors are a MUST:
http://www.ebay.co.uk/itm/260951862713
Side Light: 501 (Blue tint, white light, no resistor)
Head Light: H4 (Blue tint, white light, no resistor)
Side Indicator: Chrome (yellow light, no resistor)
Interior Light: 6 LED 42mm (white, no resistor)
Boot Light: Canbus 8 SMD (white light, no resistor)
Reg Plate: Canbus 13 SMD (white light,
2 x resistors)
Side note: you don't need LED sidelights, they are masked by the main beams anyway so go for a nice HID H4 bulb with a white or blue tint 501 light and your golden! I got these off eBay for €15, come with match fogs and sidelights and they are excellent:
http://www.ebay.ie/itm/130727139461...sid=p3984.m1497.l2649&clk_rvr_id=436131129805
And proof of how well they look compared to stock? See below