Federal Motor Vehicle Safety Standard 108 (FMVSS 108) regulates all automotive lighting, signalling and reflective devices in the United States. In Canada, the Canada Motor Vehicle Safety Standard 108 (CMVSS 108), and is very similar to FMVSS 108. The primary differences are:
CMVSS 108 requires daytime running lamps on all vehicles made since 1 January 1990, while FMVSS 108 merely permits DRLs
CMVSS 108, through an adjunct called CMVSS 108.1, permits European Headlamps while FMVSS 108 prohibits them.
The European Commission has ECE regulations (119, 113, 112, 104, 99, 98, 91, 87, 82, 77, 76, 74, 72, 70, 69, 65, 57, 56, 50, 48, 45, 38, 37, 31, 23, 20, 19, 8, 7, 6, 5, 4, 3, and 1) that regulates all automotive lighting, signalling and reflective devices for European marketed vehicles.
Summary, the lighting systems are different than the North American versions of the same car, so the bulbs you purchased will not work in your car, unless you really do your homework first.
Here are the specs:
This is what you purchased.
PY21W is known as: P21W 12V 21W BAU15S ORANGE-AMBER ECE ( P21W/12V/21W/BAU15S/ORANGE-AMBER ECE )
volt: 12
amp: 1.75
watt: 21
base: BAU15s
m.o.l.: 2.06 inch (52MM)
d.hours: 450
The DIADEM is an innovative signal lamp with interference coating, which produces yellow light.
Due to the interference coating the DIADEM produces an amber colour when lit and features an opalescent white surface - without the "mirror effect" of normal yellow coloured lights.
The DIADEM supports the cool and stylish look which car designers desire to produce with all cleared and transparent headlamp modules.
The DIADEM is interchangeable with other yellow signal lamps ( in front and in the back of the car) and it is approved for use throughout Europe.
These two bulbs below are common replacements for North American vehicles:
7528 is known as: P21-5W 12V 21W 5W BAY15D ECE ( P21-5W/12V/21W/5W/BAY15D ECE )
volt: 12
amp: 1.75 / 0.417
watt: 21 / 5
base: BAY15d - Double Contact Index Bayonet
glass: S8
filament: C6/C6
fil.res.: 6.86 ohm
m.o.l.: 2.07 inch (52.5MM)
l.c.l.: 1.25 inch (31MM)
d.hours: 1000 / 200
1157 is known as: 1157 12.8V 14V 2.1A 0.59A USA ( 1157/12.8V/14V/2.1A/0.59A USA )
volt: 12.8 / 14
amp: 2.1 / 0.59
watt: 26.9 / 8.26
base: BAY15d - Double Contact Index Bayonet
glass: S8
filament: C6/C6
fil.res.: 6.1 / 23.7 ohm
m.o.l.: 2 inch (50.8MM)
l.c.l.: 1.25 inch (31MM)
i.lumens: 402 / 37.7
cp: 32 / 3
d.hours: 1200 / 5000
Read the specs over and compare the bulbs, their not the same, not even the same type of connection.
The I.C.E. Module controls the vehicle lighting, hope you didn't distroy it.
-----------------
This is the Bulb you should have purchased:
P21 5W (
P21/5W )is known as:
P21-5W 12V 21W 5W BAY15D ECE ( P21-5W/12V/21W/5W/BAY15D ECE )
volt: 12
amp: 1.75 / 0.417
watt: 21 / 5
base: BAY15d - Double Contact Index Bayonet
glass: S8
filament: C6/C6
fil.res.: 6.86 ohm
m.o.l.: 2.07 inch (52.5MM)
l.c.l.: 1.25 inch (31MM)
d.hours: 1000 / 200
The P21/5W has the same specifications as the 7528 and 1157 listed above in terms of base and electrical contact.