View Full Version : What's the part number for the light bulb inside the headlight switch?
Turbov6Bryan
01-18-2016, 04:56 PM
My daily driver marauder has a burned out headlight switch bulb, I just want a replacement bulb assy
Pulled the little bulb out of a spare dash switch, wow wasn't anything I was expecting!
It's about 3/4 of a inch long, can only guess the "shaft" comes with a new bulb?
Thanks
WPG_Merc
01-18-2016, 05:09 PM
I was told by a dealer the head light switch & bulb are all one unit & part #.
Rockauto has em.:beer:
http://www.rockauto.com/catalog/moreinfo.php?pk=1354695&cc=1387829&jnid=431&jpid=1
fastblackmerc
01-18-2016, 05:59 PM
I was told by a dealer the head light switch & bulb are all one unit & part #.
Rockauto has em.:beer:
http://www.rockauto.com/catalog/moreinfo.php?pk=1354695&cc=1387829&jnid=431&jpid=1
That is correct.
I retrofit an LED into the holder.
jwibbity
01-18-2016, 06:01 PM
If i remember correctly its a T4 bulb
researching now
Turbov6Bryan
01-18-2016, 06:12 PM
I looked too, 37 73 40. Came up with 2 pack at radio shack
Might as well do led
FB do you recall the part number
Thanks guys
Here is the radio shack part number 2721092
Anyone have a comparable LED part #?
ctrlraven
01-19-2016, 06:35 AM
It's a Type B Tall (T4) bulb, I replaced mine a few years ago in the MM and my Taurus.
http://www.autolumination.com/74.htm
About halfway down the page ($4.99) each
Now 50% BrighterAutolumination New Products
Neo - Wedge Tall SMT LED Instrument Panel Bulbs
(Note to choose the correct bulb, measure the height & diameter of the base)
Type B Tall (T4)
Neo Wedge Instrument Panel Bulbs
http://www.autolumination.com/images/auto_bulbs/neowedge_tall_dims_wm.jpg
97272-2C000
79674-S3N-941
79670-SL0-A01
10mm= 3/8"
Go with either Super White or Green. The SW will give it a nice bright factory green look and the Green one will give it a deeper green color.
fastblackmerc
01-19-2016, 12:07 PM
I looked too, 37 73 40. Came up with 2 pack at radio shack
Might as well do led
FB do you recall the part number
Thanks guys
Here is the radio shack part number 2721092
Anyone have a comparable LED part #?
No part number, I roll my own... modify the socket, LED, resistor, wire, etc.
fastblackmerc
01-19-2016, 12:14 PM
If i remember correctly its a T4 bulb
researching now
Also called a "wheat" bulb.
Norman
01-28-2016, 01:24 PM
The first time I dealt with this problem, I just bought a new headlamp switch and swapped it. Afterwards, I had nothing to lose by examining the old switch and figured out the Radio Shack lamp solution as well. Unfortunately with RS now out of business, eBay is probably the best resource. The generic part number for the incandescent lamps Radio Shack sold is '7219 (http://www.onlinecomponents.com/chicago-miniature-7219.html?p=11146240&utm_source=google&utm_medium=cpc&utm_campaign=Shopping%20Suppli ers&utm_term=&utm_content=vz8kj1ZI&ref=GoogleAd:Shopping%20Suppli ers-Chicago%20Miniature&gclid=Cj0KEQiAlae1BRCU2qaz2__t 9IIBEiQAKRGDVUTJ6CBs2NC989rcBG d-xPsfcZZqgVQJo349rOGCa-IaAkBu8P8HAQ&cshift_ck=199822c1-19d4-4c8f-a3ae-3813efa876a6csvz8kj1ZI)'. They're a bit smaller than the factory lamps, but they do work. Be careful when you peel off the green rubber hood. The lamps run hot and often they get melted a bit bet can be reused. I used a drop of silicone adhesive to tack the green hood onto the new lamp.
The leads on the 7219s are usually too short so I had to extend them an inch or so using a soldering ion. I just clipped the leads from the old burnt-out bulb as they were the correct gauge. As others have said, they run kind of hot for their size and don't last very long.
So I now have a good spare after re-lamping it and just rotate my switches as needed. Repairs are quicker and you can do the 'surgery' on the bad one when you have time. That came in handy a few weeks ago when the one installed on the car burnt out again. I got about 10 years out of it.
I thought about an LED retro-fit, but there isn't much room in the post and I didn't have the interest in trying to figure out how to stuff a dropping resistor in there.
Good luck!
Turbov6Bryan
01-28-2016, 02:29 PM
I was able to source a 10 pack of LED bulbs and new shaft sockets for 2.25 shipped. Driving down to the local radio shack would have been 28 miles away
Let you guys know how well they work, or if they are a complete flop
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