How many Amps through the temp sender circuit - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BrianG · 05-27-2016, 03:22 PM

Hello, I was hoping that some one has already done the research on this and knows what the amperage running through the temperature sending unit circuit is. I added an inline resistor (near the dash) to get my gauge to read correctly with the sending unit that I am using (3/8 fitting instead of standard 1/2). I have it dialed in finally, but wanted to make sure that I'm not going to burn my truck down. I have a 3/4 Watt variable resistor in-line. It is a Cermet style resistor. Anyone have any idea if this will be sufficient or is a potential issue?

Wrenchbender Ret · 05-27-2016, 05:51 PM

The temp gauge draws a very small amount of current. It will not burn your truck down. If there is a direct short you have a fuse in the inst. circuit that will blow unless it the wireing has been cobbled .

**VetteVet** · 05-27-2016, 11:11 PM

Ease your mind.

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**70cst** · 05-27-2016, 11:14 PM

Not sure if this will help but ...

BrianG · 05-31-2016, 10:06 AM

Quote:

Originally Posted by VetteVet

Ease your mind.

Attachment 1537376

Thanks!, I guess this does ease my mind. I set mine up like the option two in your illustrations. I couldn't seem to get it to work right with the first option, although, I don't really see why it wouldn't have. Maybe I just wasn't patient enough.

05-27-2016, 03:22 PM	#1
BrianG Registered User Join Date: May 2011 Location: Oakley, Michigan Posts: 735	How many Amps through the temp sender circuit Hello, I was hoping that some one has already done the research on this and knows what the amperage running through the temperature sending unit circuit is. I added an inline resistor (near the dash) to get my gauge to read correctly with the sending unit that I am using (3/8 fitting instead of standard 1/2). I have it dialed in finally, but wanted to make sure that I'm not going to burn my truck down. I have a 3/4 Watt variable resistor in-line. It is a Cermet style resistor. Anyone have any idea if this will be sufficient or is a potential issue?

05-27-2016, 05:51 PM	#2
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,229	Re: How many Amps through the temp sender circuit The temp gauge draws a very small amount of current. It will not burn your truck down. If there is a direct short you have a fuse in the inst. circuit that will blow unless it the wireing has been cobbled .

05-27-2016, 11:11 PM	#3
VetteVet Msgt USAF Ret Join Date: Jan 2005 Location: Kalamazoo, Michigan Posts: 8,718	Re: How many Amps through the temp sender circuit Ease your mind. __________________ VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative.

05-27-2016, 11:14 PM	#4
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,373	Re: How many Amps through the temp sender circuit Not sure if this will help but ... Attached Images __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

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