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1949 Cadillac 6volt to 12volt instrument modifications

Started by cwiaa, July 27, 2008, 01:49:39 PM

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cwiaa

I have a 1949 CDV that I am doing a complete body off resto/mod project. My goal in all this is for the car to be visually stock
both inside and out but with upgrades to enhance driving in the modern world. The car will have a 1962 Cad 390 mated to a
1964 Cad th400, 4wdb, PB, PS, behind the dash A/C. electric windows and seat.The car will have a 12volt system and my question
is what modifications will I have to make to the gas, temp and amp gauges to make them function correctly? I will probably
install direct reading gauges but hide them under the hood as I do not want to alter the interiors stock appearance. Please
save the resto/mod critiques......I just need some advice!
Will 
CLC # 20985

Jeff Maltby 4194

#1
Hi Will. Check out the bottom website and on the right side, you will find Runtz voltage drops for 6 volt gauges.

http://www.gregsonline.com/eshop/Electrical/LIP612.htm
http://www.fifthaveinternetgarage.com/parts/index.html
http://www.fifthaveinternetgarage.com/parts/parts_counter_2.html

Jeffo 49er chapter calif :<)
Jeffo 49er chapter

CLC 1985
Honda Gold Wing GL1500

Chris Bryant #19358

Hi Guys,

Sorry to be the  spoiler here but I was interested and checked out the Runtz voltage drops. Sadly, they are only for negative ground and unless I miss my guess the 49er had positive ground. I hope I am wrong but all is not lost because I did not check the other two websites.

Cheers and good luck!

Chris Bryant #19358

CLC#12231

Frank

mario

hi chris:
frank is correct, you missed your guess!!!!
my 49 was and is negative ground.
ciao,
mario

art gardner

I converted a club coupe to 12v using stock instruments, keeping the stock guages 6v.  I used an electronic 6v voltage supply from Ron Francis Wiring.  A very good product that has given me very good results.

Art

Chris Bryant #19358

Well, strike me pink, boys! I was vaguely aware of a change to negative ground for 6V systems but didn't know when it started - obviously about 1949.

Cheers,

Chris Bryant