The Stovebolt Site Forums The Shop Area General Truck Talk 6 volt bulb numbers

Hello, I can't tell you how many tail and parking light bulbs I have changed over the years. The new numbers are not listed by the old numbering system. I know I'm suffering from a slight case of coma or worse. On our old pre 1955 six volt trucks what is the tail/brake light numbers and parking light numbers? Is the tail light 1156 and the park..... oh heck! You tell me please. Doc.

recommend Philips and CEC brand bulbs

headlight PAR56 (178mm / 7inch dia.) 6006 45/35W

parking and tail lamps 3 candle power #63 4.4W
stop lamp 21 candle power #1129 16.8W
optional dual filament tail + stop bulb 21-3 candle power #1154 16.8/5W
cluster and ignition sw. 2 candle power #55 2.9W
high beam indicator 1 candle power #51 1.5W
dome lamp 15 candle power #87 13W
radio dial lamp ~1 candle power #44 2W

Comparable 6v and 12v auto bulb chart/table/list.

Equivalent base/lumen 6v/12v LED bulbs are readily available.

You can substitute the #81 for the #63. It's the same size but double the candle power. My experience with 6v LEDs is quite different from Tim's. Admittedly it's been a few years but the available 6v LEDs were dimmer than the incandescent bulbs. Perhaps there are more suitable bulbs on the market now. Edit: I just did a quick check and found THESE BA9 base 6v LEDs that would fit the dash lights. The stock bulb is the #51 which is 1 cp. The LEDs are 13 lumens. To convert lumens to candle power you divide by 12.57 which gives the LED a candle power of 1.03, virtually the same but with a much narrower beam angle. i wasn't able to find any BA15 6 volt LEDs on that site. Perhaps I wasn't using the correct search terms. Bottom line don't assume that a bulb is brighter just because it's LED. Do your due diligence. BTW if you're wanting brighter dash lights you can substitute the #55 which is 2 cp or do what I did and use #316 bulbs. They are a tad longer with an elongated dome but will fit and they are 4 cp. They make quite a difference to my old eyes in the dark. Good luck.
Edit #2: Painting the inside of your tail light housing with gloss white paint and using a plastic lens instead of glass will help with your light output as well.

Thanks so much guys, now I can tell Kathryn I'm not going all the way down dementia road. Doc.

I bought/buy all mine from superbrightleds.

match the bulb/base

NOTE: your grounds to the housings must be good.

What flasher do you use for yours Tim ,was thinking of getting some leds for my truck but not shure how it will work out , not good in the electrical part even though theses trucks are probably very basic

I got an 6v LED flasher.

I do not know the make/model.

6v flasher search

(Please let me know if that search works.)

Another option if you don't find suitable alternatives is to contact Hirsch Automotive. They have 6 volt halogen bulbs made that are quite bright. They have bulbs for most applications. They aren't inexpensive but are very effective.

Thanks Tim the search worked ,ThanksTiny will check out the halogens.