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#1 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 1,108
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Painless Temp Sending Unit Wiring Question
Maybe a really dumb question, but I am confused on a couple of wires that attach to the Temperature Sending Unit on the intake manifold.
The instructions from Painless show the following: Grn/Blk 18 921 Temperature Sending Unit to Temperature Gauge Green 18 983 Temperature Sending Unit to Temperature Light I have a factory Temp Gauge, but I noticed there is a red idiot light that would indicate when the engine temperature is too hot. Should I attach BOTH the Green/Black and the Green wires to the Temp Sender? Thanks, POP
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2016 RAM Laramie HEMI 1966 Fairlane GT/A, 390/335 HP If it costs you a dollar to make a friend, KEEP THE DOLLAR. If it costs you a friend to make a dollar, KEEP THE FRIEND. |
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#2 |
Registered User
Join Date: Nov 2014
Location: Lincoln City DE
Posts: 1,292
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Re: Painless Temp Sending Unit Wiring Question
you may have to run green from gauge to light
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#3 |
Post Whore
![]() Join Date: Feb 2016
Location: Portland Oregon
Posts: 11,156
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Re: Painless Temp Sending Unit Wiring Question
The short answer is no. The second wire will likely will cause your guage to read incorrect The sensors for guages and lights are different. The guage is a resistor that changes its value in a controlled manner as it changes temperature. The light uses a switch that closes at a specific temperature. Both are grounding their indicators but in different ways. If you wanted to utilize the light you could install second sensor that is appropriate for the light and it should work. That being said I personally have never tried it on one of these trucks but I have done it on my Javelin. But that's a completely different beast.
PS it's not a dumb question!
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Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. ![]() RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377 Last edited by HO455; 05-27-2017 at 11:07 PM. Reason: PS added |
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