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1941 Cadillac temperature guage

Started by C Gorgas, January 18, 2016, 08:58:46 PM

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C Gorgas

January 18, 2016, 08:58:46 PM
I changed to negative ground on my '41 Cadillac. How does this affect my temperature gauge? All other items have been taken care of and work fine. C Gorgas 25441

Steve Passmore

#1
January 19, 2016, 03:09:29 AM
You may have to swap the wires around on the gauge but not too sure. If you changed up to 12 volt I don't think the sender will work anyway?
Steve

Present
1937 60 convertible coupe
1941 62 convertible coupe
1941 62 coupe

Previous
1936 70 Sport coupe
1937 85 series V12 sedan
1938 60 coupe
1938 50 coupe
1939 60S
1940 62 coupe
1941 62 convertible coupe x2
1941 61 coupe
1941 61 sedan x2
1941 62 sedan x2
1947 62 sedan
1959 62 coupe

C Gorgas

#2
January 21, 2016, 09:31:23 AM
 I stayed with 6 volts but changed to negative ground; I have since pulled the gauge and sending unit and sent them to the person whose business is checking and rebuilding gauges, speedometers, etc. Will post again as soon as I know the end result. C. Gorgas 25441 

Bill Ingler #7799

#3
January 21, 2016, 10:39:51 AM
I am curious to know what was the reason you decided to go from a positive to negative ground on your 41?    Bill

C Gorgas

#4
January 30, 2016, 08:45:24 PM
I changed to negative ground because I was having great difficulty finding the correct battery. I was informed of a number of places but when I checked with them they could not help. Chet 25441

DBDB

#5
February 01, 2016, 03:41:17 AM
I never heard that the battery has anything to do with negative or positive ground .You connect the positive or negative to the ground depending how the car is wired .

Steve Passmore

#6
February 01, 2016, 04:02:04 AM
Quote from: DBDB on February 01, 2016, 03:41:17 AM
I never heard that the battery has anything to do with negative or positive ground .You connect the positive or negative to the ground depending how the car is wired .

Your absolutely right Danial. One just swaps the terminals.
Steve

Present
1937 60 convertible coupe
1941 62 convertible coupe
1941 62 coupe

Previous
1936 70 Sport coupe
1937 85 series V12 sedan
1938 60 coupe
1938 50 coupe
1939 60S
1940 62 coupe
1941 62 convertible coupe x2
1941 61 coupe
1941 61 sedan x2
1941 62 sedan x2
1947 62 sedan
1959 62 coupe

caddyman20

#7
February 03, 2016, 02:16:07 AM Last Edit: February 03, 2016, 02:20:04 AM by caddyman20
Just a trick I did on my best friends 41 cad.  I took the battery box out of the car and lengthened the box .5 inch.  Then I went to my local John Deere dealer and purchased one of they're strong box batteries.  If I remember right it's 13x7 inches.  It's bigger than a normal small square 6v battery. But that is a excellent battery. Spins the engine over great.  Way more power than a normal 6v battery.   Also.  It might not be a good idea to go negative ground on your 41.  The starter wasn't designed to run that polarity.  It will still turn the right direction but that's a very expensive starter. Especially the solenoid.  I wouldn't think it's doing it any favors by reversing that.   If it were me I'd leave it as God intended it to be.   Chris clc 18814
C. Short
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