Joe jeziorski
Junior Member
I have a 2013 RCSB with Factory 8.4 and 7 speed fan MTC , do I need a harness for ATC and if so which one
Thanks joe
Thanks joe
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You may or may not. Since your truck is a 13 you will not need the humidity sensor that goes next to the rear view mirror. Your truck has a different A/C compressor than the 14 and up 1500's. You will need to install the interior temp sensor that mounts in the knee guard under the dash on the right side of the steering wheel. You can see the little slats in the panel where in mounts. It is possible that your truck may have the wiring for this, especially since it's an RCSB because they install the same harness in all of them because so few were built. I recommend pulling the knee guard and looking for an unused connector in that area. After you install the interior temp sensor you will need to purchase the Alfa tool to first change the truck to Dual Zone ATC and then once that code is set change it to Single Zone ATC. If your truck doesn't have the connector then you would need to contact Mike at @M2mods in the vendor section of the forum. He can get you all set up.I have a 2013 RCSB with Factory 8.4 and 7 speed fan MTC , do I need a harness for ATC and if so which one
Thanks joe
Check on your actual HVAC connector mounted on the right side of the glove box. Pin# 11 should be LB/O stripe and pin# 12 should be LB/B stripe. If these two pins are populated you should have the connector for the sensor. It's the quickest way to verify you have the connector if you are having trouble finding it.Thanks for the response, I did install the temp sensor and there are a few unused connectors but none fit the sensor. Thought it might be behind the A/C control panel. I do have alphaobd.
Ok thanksReach out to me after 5/10 when I get back and we can get you started on getting the atc add-on harness
M² Mods.
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Thanks grim that's what I was thinking about 2013 model year with all the changesJoe...
There's something there on your 13 RT at 11 & 12 like you said...
I'm not entirely sure what. Perhaps another quirk with a 2013 model year.
Here's updated pictures for reference of your truck vs what's listed...
M² Mods.
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Same physical connector/style 4 pin as the sun sensor connectorMpgrimm2 is the picture of the temp sensor connector on your harness what the factory one will look like under my knee bolster?
Thanks again I'll take another look