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Auto Talk => The Garage => Topic started by: Submariner on September 18, 2021, 11:08:13 PM

Title: P21W in an 1156 socket?
Post by: Submariner on September 18, 2021, 11:08:13 PM
Is it possible to fit an P21W bulb to an 1156 socket?

I've tried several 1156 LED bulb replacements for my reverse and fog lights.  None provide a meaningful increase in light output over the stock halogen bulbs.  On the other hand, there do exist very bright P21W bulbs, but the socket for the two bulbs is a bit different.

I'v looked for adapters but none seem to exist.  Any ideas?
Title: Re: P21W in an 1156 socket?
Post by: MrH on September 19, 2021, 01:52:29 PM
:confused:

Fog lights aren't 1156 bulbs typically.

What's the vehicle and year? 
Title: Re: P21W in an 1156 socket?
Post by: JWC on September 22, 2021, 04:00:44 PM
Though it has been decades since I sold auto parts, I believe the pins on the sides of the base are aligned differently.
Title: Re: P21W in an 1156 socket?
Post by: Submariner on September 22, 2021, 07:21:46 PM
Quote from: JWC on September 22, 2021, 04:00:44 PM
Though it has been decades since I sold auto parts, I believe the pins on the sides of the base are aligned differently.


Indeed.  180 degrees offset vs. something like 140 degrees.
Title: Re: P21W in an 1156 socket?
Post by: Submariner on September 27, 2021, 08:35:27 PM
Quote from: MrH on September 19, 2021, 01:52:29 PM
:confused:

Fog lights aren't 1156 bulbs typically.

What's the vehicle and year? 

Not sure, though both the reverse and fog lamp are 1156.