VIIVIIIXIII

Just wondering what are the bulb socket sizes for the BMW E60 (2004 530i)? I'm looking to replace the stock halogen bulbs with CANBUS LED bulbs. Are the front and the rear the same?

My owner's manual says the front turn signals (amber) are PY21W, and the rear turn signals (amber) are P21W. I was told the PY21W is the amber, while the P21W is not. What does this discrepancy mean? The PY21W and P21W notches on the base of the bulb should be different so I can't put a PY21W bulb in the P21W.

Also: do the PY21W mean 7507 aka 1157? do P21W mean 7506 aka 1156?

I'm looking at these 1157, but not sure if they will fit:
2 1157 BAY15D 12V 24V Amber Cree Canbus 5 SMD Turn Brake Tail LED Light Bulb | eBay

Thanks in advance!

vkhong

On the BMW E60 530i:

Rear turn indicator lamp is:
P21W / 7506

Front turn indicator lamp is:
PY21W / 7507

P=Parabolic bulb, 21 watts, Y=yellow / amber (for front turn indicator).

Both bulbs use the same type of base:
BA15s - 26mm, bayonet base with single contact.

The bulb you reference on eBay will not work. Those have the BAY15d dual-contact base.

This PDF information sheet is very helpful for me:
Automotive and Motorcycle bulb list

sanjsanj

I've heard a lot about led indicator bulbs still giving errors, would be great to know if you find any that are actually error free, and don't make it flash too fast.

The alternative would be to code out the checks, hopefully that would stop it from flashing too fast

vkhong

The CAN BUS LED lamps will product lamp error messages, I disable the cold / wam / control checks via NCS Expert.