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70 SS Temperature gauge resistor

8008 Views 7 Replies 4 Participants Last post by  Jody1970
Anyone know what color the resistor on the back of a 70 SS Temperature gauge is? I have a yellow one on it now but for some reason I thought the temp gauge used a green one. Also, does anyone know what the ohm's reading would be on one of these when I test it.

Jody

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70 Chevelle SS
454/400T.H.
Black/White Stripes
My 1970 SS

[This message has been edited by Jody1970 (edited 04-16-2001).]
1 - 4 of 8 Posts
I took an ohm's reading on the temp gauge ceramic resistor (removed from the gauge) and it read 91.3 Is it bad?

I have two other ones that read 83.3 and 85.1 that I could use in its place.

Another question: I took a reading across the vertical post's of the gauge itself and this was an open circuit. These are the post's that the Ceramic resistor attach's to. Is this correct or should I have got resistance on this reading? My gauge does not work and I am trying to narrow it down to the defective part. My gauge reads in the 4 o'clock position all the time. If I apply power it always goes to the 4 o'clock position no matter where I position the needle before I apply power.

Coppertop: The gauge only has two wires that attach to it via the PCB and attach to the horizontal posts of the gauge, 12volts and the ground that comes from the Temp sensor. The ceramic resistor attach's to the vertical post's of the gauge.

Thanks for the replies!

Jody

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70 Chevelle SS
454/400T.H.
Black/White Stripes
My 1970 SS
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Thank you, I will give that a try.
Jody

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70 Chevelle SS
454/400T.H.
Black/White Stripes
My 1970 SS
Well I finally have a temperature gauge again.
Elree: You were correct. The problem was with the lower vertical terminal not being grounded. I ended up just running a jumper from the bottom post to a ground and temp gauge started working.
Coppertop: You were correct in your statement also that the gauge has 12V, Sender Wire, and a very important Ground.
Thanks for the help guys. Jody

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70 Chevelle SS
454/400T.H.
Black/White Stripes
My 1970 SS
1 - 4 of 8 Posts
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