Turn signal bulbs - 1156 or 7506?

**nramsey** · 08-09-2009 08:55 PM

Hi all,

Going to order some stealth bulbs for an upcoming clear corner job but am confused on bulb size. I see alot of reference on the forum to 1156 size bulbs for the front turn signals, but Sylvania's bulb guide says 7506 is the size I need. Which is correct?

From Sylvania's site...

2008 AUDI A4 (With HID (high intensity discharge) headlamps)
High & low beam headlamp
HID-D1S

Parking light
2825LL

Front turn signal
7506LL

Rear turn signal
7506LL

Tail light
5007
5007LL Long Life Upgrade: Up to twice the life of the standard lamp

Stop light
7506LL

High mount stop light
Assembly

Fog/Driving light
H11
H11ST Silverstar High Performance Lighting: The Whiter and Brighter Halogen
H11XV XtraVision Halogen - The Brighter Light

License plate
6418
6418LL Long Life Upgrade: Up to twice the life of the standard lamp

Back up light
7506
7506ST Silverstar Signal Lighting: Complete the Look: Crisp, Clean, Style
7506LL Long Life Upgrade: Up to twice the life of the standard lamp

Front sidemarker
2825LL

Glove box
2825
2825LL Long Life Upgrade: Up to twice the life of the standard lamp

Map light
64111

Dome light
6411

Step/Courtesy light
2825
2825LL Long Life Upgrade: Up to twice the life of the standard lamp

Trunk/Cargo area
6418
6418LL Long Life Upgrade: Up to twice the life of the standard lamp

Under hood light
6411

Daytime running light
7506LL

**Sly Raskal** · 08-09-2009 09:00 PM

1156 can be used for 7506. What you should be checking is the proper voltage and wattage bulb because 1156 bulbs can come in both 12v/21w and 12v/28w configurations.

A 21w bulb in a 28w slot is fine, but not the other way around otherwise you'll melt the housing or melt the wiring over time. the greater the difference in wattage from what you should be using, the more likely you are to damage your setup.

**nramsey** · 08-09-2009 09:06 PM

Good info, thanks. Is it safe to assume I should get a 21w bulb as opposed to 28w?

**Sly Raskal** · 08-09-2009 09:09 PM

Originally Posted by nramsey

Good info, thanks. Is it safe to assume I should get a 21w bulb as opposed to 28w?

Not necessarily.

I know for a fact the DRL bulbs are 21w bulbs, but I don't know what wattage the turn indicators are.

FYI, you can find 7506LL bulbs at autozone.

**Quattro** · 08-09-2009 11:16 PM

hmmmm, interesting people do say 1156.

I believe I am running 1156, haven't had any problems. Buy the 7506 ones and let me know how that turns out, maybe we might have to update the FAQ.

**JamezHill** · 08-09-2009 11:19 PM

I just put 1156 Stealth bulbs today. Seems to be ok.

**Sly Raskal** · 08-10-2009 12:37 AM

Originally Posted by Quattro

hmmmm, interesting people do say 1156.

I believe I am running 1156, haven't had any problems. Buy the 7506 ones and let me know how that turns out, maybe we might have to update the FAQ.

Considering that 7506 IS the oem bulb you should go ahead and put the list that he posted by sylvania as that is the correct bulb. Since 7506 bulbs aren't as easily available as 1156, most install 1156. :2cents:

**2008A4SLine** · 07-23-2017 07:27 PM

Originally Posted by Sly Raskal

Not necessarily.

I know for a fact the DRL bulbs are 21w bulbs, but I don't know what wattage the turn indicators are.

FYI, you can find 7506LL bulbs at autozone.

And NAPA too