Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


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#197735 02/11/11 02:43 AM
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Backyard Mechanic
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On the pre-1940 Chevrolet headlamps, a dual contact bulb was used, typically with one element having 32 candle power for the bright lights, and 21 candle power for the dim lights.

I see there are dual contact headlamp bulbs having two 32 cp elements. What is the purpose of having two elements of the same candle power rating?

Mark Yeamans
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The output is the same but the aiming is different. High beam throws the light higher, further down the road.


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I used 50-50 CP bulbs in our 31. They are hard to find. I found a full box of them in an antique store in a small town.


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What's the part number? I didn't know they were even made. I'll do some searching. I got a whole box of the 32/32s from my FLAPS so I have what will probably be a lifetime supply but I'd like to try a pair of 50/50s to see the difference.


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Tiny,

Thanks for the reply. I got the headlights on my 37 pickup re-wired and installed the 32/32 bulbs and road-tested it tonight, and I can see the difference.

Mark

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I have a lamp bulb chart that lists a bulb number 1188 as a 50cp/32cp dual filament. Don't have a listing for the base type so can't guarantee they will fit but might be worth a try.


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Wrong base Chip. The PN for the 32/32 is 2330 I believe.


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I use 1000 for the 32/32 bulbs in my '31-2s but the later 2320, 2330 bulbs have the "prefocus" ring on the base. Original 21/21cp early 30s bulbs are 1110.


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Reviving an old thread.

I've ordered 1188s from somebody on EBay. They don't last long. And I mean maybe an hour on low beam. Voltage from the generator is fine so the problem is with the bulbs.

I know that FS has them, but I have been looking for another vendor. I just ordered a 10 pack from Candlepower, Inc. for $15.59 including shipping. I should have them in a day or two. I'll report back on how they work.


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Search ebay for 1188 bulbs then click on ebay motors. I see a number of NOS bulbs for sale.


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