| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,087 Posts1,056,112 Members48,434 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jul 2019 Posts: 559 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 559 | Just finally picking through the to do list on the project truck and the gauges are next. Got speedo working well and gas gauge and oil pressure all set...... but i could have swore the temp gauge had a cut capillary tube but i was wrong! Its a electric gauge. Does anyone know what the oem resistance values were for the stock sender? The gauge seems fine but with all the research i have done i keep getting totally conflicting info. Any insight on this would be greatly helpful. **** im not concerned with the thread size or where it goes because this is a custom setup but i just need to figure out the factory resistance values***
Thank you.
Last edited by Barnfind49; 10/01/2019 6:33 PM.
| | | | | Joined: May 2005 Posts: 1,624 Shop Shark | | Shop Shark Joined: May 2005 Posts: 1,624 | Easy problem to solve. Use a variable resistor around 0-100 ohms. One lead to wire to gauge, other wire to ground. Key on. Vary resistor till you peg both ends of gauge. Read resistance of the resistor at both 0 and full scale and you have it. Problem is getting parts person to sell you the sensor when only knowing the resistance value.
Six volt guy living in a twelve volt world
| | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | Seems like you should have a mechanical gauge on a 49? If so, then you are going rogue and the gauge is not stock. If so this would work with no fuss on any motor in the galaxy.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Mar 2010 Posts: 10,280 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,280 | If you have an electric temperature gauge in the cluster, classicparts.com has what you need. It is part# 53-811A. $24.95. It is for '57-'78 trucks. The write up they have for this part is pretty lengthy and sounds like it will work for your application.
Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Jul 2019 Posts: 559 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 559 | Seems like you should have a mechanical gauge on a 49? If so, then you are going rogue and the gauge is not stock. If so this would work with no fuss on any motor in the galaxy. Its a stock gauge. Some gmc’s had electric gauges from what I have read. All chevys had the capillary tube type senders. | | | | | Joined: May 2005 Posts: 8,983 Sir Searchalot | | Sir Searchalot Joined: May 2005 Posts: 8,983 | OK, good to know. When I searched I got a mechanical gauge for 1949 GMC. Click.
Right is right, even if everyone is against it, and wrong is wrong, even if everyone is for it. - William Penn
| | | | | Joined: Jul 2019 Posts: 559 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 559 | Easy problem to solve. Use a variable resistor around 0-100 ohms. One lead to wire to gauge, other wire to ground. Key on. Vary resistor till you peg both ends of gauge. Read resistance of the resistor at both 0 and full scale and you have it. Problem is getting parts person to sell you the sensor when only knowing the resistance value. You are correct. That would be the scientific way to do it! I was hoping someone just knew off the top of their head what they were. Like the common fuel gauges that most remember. | | | | | Joined: Jul 2019 Posts: 559 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 559 | | | |
|
|
| |
