Warning

 

Close

Confirm Action

Are you sure you wish to do this?

Confirm Cancel
BCM
Durkin Tactical Franklin Armory
User Panel

Posted: 2/17/2012 9:13:07 PM EDT
What's the difference? Seems conflicting info, like one is single and dual filament?



Does it matter since it's being used for DRLs and not for brake lights that require dual filaments?


 
Link Posted: 2/17/2012 9:37:51 PM EDT
[#1]
I accidentally bought 3156 for my truck other day. It doesn't go in the light connection it's a different kind of plug so 3156 doesn't work :(
Link Posted: 2/17/2012 9:53:58 PM EDT
[#2]
They have different bases, the bayonets that they attach with with are different and the dual filament ones have two contact pads on the bottom while the single filament ones only have one.
Link Posted: 2/17/2012 10:04:25 PM EDT
[#3]
3156 single, 3157 dual element
Link Posted: 2/18/2012 6:26:45 AM EDT
[#4]
so would i be GTG with a 3156 Single filament since it's used for Daytime Running Lights only?


 
Link Posted: 2/18/2012 9:30:37 AM EDT
[#5]
Probably, do you have the original bulb/can you look at the socket it goes in? If it has one contact point then yes, if it has two, you need the dual filament bulb.
Link Posted: 2/18/2012 10:35:40 AM EDT
[#6]



Quoted:


Probably, do you have the original bulb/can you look at the socket it goes in? If it has one contact point then yes, if it has two, you need the dual filament bulb.


thanks - i'll check it out



 
Link Posted: 2/18/2012 10:37:38 AM EDT
[#7]
Quoted:
3156 single, 3157 dual element


Link Posted: 2/18/2012 10:38:56 AM EDT
[#8]
If there are two wires to the socket, 3156.  If  three, 3157.

You may be able to sand off the key lugs to make a 3157 work in place of a 3156, but I'm not sure of that.  That would be a field expedient type of thing, though.  Don't sand off the lugs that keep the bulb in the socket....
Link Posted: 2/18/2012 10:46:05 AM EDT
[#9]
1064  



I must be old
Link Posted: 2/18/2012 10:53:08 AM EDT
[#10]
Donsbulbs.com is an excellent reference for anything light bulb related

3156

3157
Link Posted: 2/18/2012 11:19:39 AM EDT
[#11]
I must be old.  How do people not know this?


Primary uses:
3156=Back-up lights
3157=tail/brake lights.

Link Posted: 2/18/2012 11:26:34 AM EDT
[#12]
In auto parts stores they have these manuals hanging from the bulbs aisle (or sometimes it's an electronic dohicky) where you look up the year, make and model of your vehicle and it'll tell you which bulbs you need where.

Link Posted: 2/18/2012 11:33:28 AM EDT
[#13]
when did they change the numbers ? i remember 1156 and 1157
1156 reverse lights
1157 stop and turn, the posts on the 1157 were not even either, one was low and one was higher.
i am old too.
Link Posted: 2/18/2012 11:39:20 AM EDT
[#14]
Quoted:
when did they change the numbers ? i remember 1156 and 1157
1156 reverse lights
1157 stop and turn, the posts on the 1157 were not even either, one was low and one was higher.
i am old too.


1156 and 1157 were the old metal-base, twist-in bulbs. 3156 and 3157 and plastic-base, plug-in.
Link Posted: 2/18/2012 12:37:43 PM EDT
[#15]
Link Posted: 2/18/2012 7:32:06 PM EDT
[#16]





i know, but LED are not made for constant on for DRL, it's perfect for quick on/off like interior lights, brakes lights etc. i've read of them burning or melting in DRL use.



 
Close Join Our Mail List to Stay Up To Date! Win a FREE Membership!

Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. One new winner* is announced every week!

You will receive an email every Friday morning featuring the latest chatter from the hottest topics, breaking news surrounding legislation, as well as exclusive deals only available to ARFCOM email subscribers.


By signing up you agree to our User Agreement. *Must have a registered ARFCOM account to win.
Top Top