Seat Leon LED Bulbs Replacement Indicators, Reverse, Main Beam - H7 PY21W P21W 5F1 [2012-2018] 

amzn.to/2QouStg - PY21W amber front indicators
amzn.to/3a8ADrE - PY21W amber front stronger ones
H7 front dipped (has to be short - currently not available)
amzn.to/2MkUUdG - H7 front main beam
amzn.to/3qSkAEc - P21W red brake rear
amzn.to/3oKWl96 - P21W red brake stronger ones
amzn.to/2QouStg - PY21W amber rear indicators
T10 w5w red sidelights rear
amzn.to/3oFu2Jc - P21W white reverse rear
amzn.to/2JXSXZC - P21W white reverse stronger ones
P21W red fog light rear (not recommended to replace as they are not as bright as halogen bulbs)
Seat Leon LED Bulbs Replacement Indicators, Reverse, Main Beam - H7 PY21W P21W 5F1 [2012-2018]
Front headlamp has to flaps to access bulbs. One is for main beam and indicators and other is for dipped beam. please notice the dipped beam has a dome blocking longer bulbs to be fitted. only smaller bulbs will fit and we havent got LED ones that fit at the momemnt.
Indicators are simple swap and no errors
Rear lamp comprises of 2 elements - one accessible through the boot for brake light and indicators, other one through the boot door by removing plastic cover.