ATC conversion champs help a poor soul? - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 29 (permalink) Old 08-10-2016, 06:03 PM Thread Starter
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Exclamation ATC conversion champs help a poor soul?

Hey guys,

So my A/C light won't go off, still beeps when pushed, and still engages/disengages the A/C (which works) but I can't ever tell where it's at due to the constant light. Decided to jump ship and do the ATC conversion. Had all the tutorials pulled in a browser and school got in the way for a while. I have the new head unit for the mod in hand so far. Decided to get it done and found virtually all the tutorials are gone from the net and it seems this is a dead wish within intrepid enthusiasts (which hopefully aren't extinct). Does anyone have a guide or the original guides that could be brought back from the dead for this poor chap? I would rather hack and splice than pull the whole car apart. The car likely isn't going to last until the second coming, but would like to let her grow old and die with all the add ons she never got from the factory. Any and all substantiative help from charitable men would be greatly appreciated for us both.

(I have a 2004 Intrepid SXT by the way [p.s. The original Mopar battery just gave up the ghost at 174,000 miles and 12 years of faithful service!])
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post #2 of 29 (permalink) Old 08-10-2016, 07:45 PM
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I don't have the clean harness-swap How-To (which I did on my Concorde that had MTC), but I did save the wiring-hack How-To as a .mht file to my hard drive.
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post #3 of 29 (permalink) Old 08-10-2016, 08:10 PM Thread Starter
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Awesome.. Not sure what that file type is though.. If you would be willing to share and tell me how to open it, I would appreciate it! Thanks for the quick response!

Last edited by Ididit86; 08-10-2016 at 08:11 PM. Reason: Typo
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post #4 of 29 (permalink) Old 08-10-2016, 08:40 PM
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You're welcome.

.mht is viewable in Internet Explorer. But I'm not sure that all browsers can open it, so I just saved it to pdf, so I can send you that and there won't be any problem opening it. PM me your email address - munge it so bots can't read it.
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post #5 of 29 (permalink) Old 08-14-2016, 03:45 AM
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I would get the appropriate year dash harnesses for the car you have. There's two of them. Upper/Lower. 1998-2001 or 2002-2004. Can come from an Intrepid, 300M or Concorde.

You'll need the ATC Head and the Blower Motor power module also. This is the easiest way to insure a clean install that will work.

Otherwise it's cut/splice/pray.

With the dash harnesses route you'll have to pull the dash out. A lot of work but in the end you'll be Golden.
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post #6 of 29 (permalink) Old 08-14-2016, 08:10 AM
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And if you have a leaky evaporator, then would be the time to change it too (while you have the dash out).
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post #7 of 29 (permalink) Old 08-16-2016, 01:00 AM Thread Starter
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Thanks everyone for your time and help! The guide looks great. I would prefer to do the dash pull, as recommended above, but without the guides I think I may have to just do some careful soldering and shrink wrapping. You both are rock stars for being willing to share your knowledge with me. Thanks.
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post #8 of 29 (permalink) Old 08-16-2016, 06:09 AM
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You're welcome. Good luck whichever way you go with it.
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post #9 of 29 (permalink) Old 10-23-2016, 04:59 PM
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This is my next mod. Anybody got the how-to for installing without pulling the dash?
And where exactly is the blower module located and what does it look like? I dug around a couple of ATC equipped cars in the JY this week and couldn't find anything but a headache.
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post #10 of 29 (permalink) Old 10-23-2016, 06:36 PM
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Quote:
Originally Posted by lukas james View Post
This is my next mod. Anybody got the how-to for installing without pulling the dash?
And where exactly is the blower module located and what does it look like? I dug around a couple of ATC equipped cars in the JY this week and couldn't find anything but a headache.
The blower module is mounted on the underside of the HVAC assembly (passenger side) - just above where carpet meets firewall. The part of the module that is visible is a rectangular shape, with one screw on either side that attach it to the HVAC case - see ebay links below. The screws are somewhat difficult to get a wrench on - pull the carpet back to give some room for a small (1/4" drive) socket and ratchet. IIRC, pretty sure it takes an 8mm socket (5/16" works fine too - 5/16" and 8mm are *very* close to the same size). A universal and extension may help. Like I said - very close working space.

What the blower modules look like:
(chrysler, dodge) (LH, 300m, concorde, intrepid) blower (resistor, power, module) | eBay
The ones with the metal cage with round holes is the MTC resistor that you have now. You only see the black rectangular part with it installed. The metal cage part is up inside the HVAC assembly. The ones with cast aluminum heat sink are the ATC power module.

I *strongly* suggest buying the ones with the two large round transistors on them - like this one:(chrysler, dodge) (LH, 300m, concorde, intrepid) blower (resistor, power, module) | eBay
They are pulled from 1st gen. LH cars - are much more rugged than the ones that came in 2nd gens. The 2nd gen ones are known for burning out. The 1st gen. ones last forever, and are plug-n-play into our cars. Worth the 50 bucks (or pull your own for probably a bit less if you have 1st gen. LH cars in a yard nearby).

PM me your email address (munge your address to avoid the spam bots), and I'll send you the pdf of the How-To.


'98 LXi - Later Concorde gages (black w/ chrome rings)/'99 LX - LHS gages (white) - HIR bulbs

Last edited by peva; 10-23-2016 at 07:12 PM.
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post #11 of 29 (permalink) Old 10-23-2016, 06:49 PM
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I just happen to have two of those 1st gen blower modules laying around! Ready for sale!
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post #12 of 29 (permalink) Old 10-23-2016, 07:01 PM
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Quote:
Originally Posted by peva View Post
The blower module is mounted on the underside of the HVAC assembly (passenger side) - just above where carpet meets firewall. The part of the module that is visible is a rectangular shape, with one screw on either side that attach it to the HVAC case - see ebay link below). The screws are somewhat difficult to get a wrench on - pull the carpet back to give some room for a small (1/4" drive) socket and ratchet. IIRC, pretty sure it takes an 8mm socket (5/16" works fine too - 5/16" and 8mm are *very* close to the same size). I universal and extension may help. Like I said - very close working space.

What the blower modules look like:
(chrysler, dodge) (LH, 300m, concorde, intrepid) blower (resistor, power, module) | eBay
The ones with the metal cage with round holes is the MTC resistor that you have now. You only see the black rectangular part with it installed. The metal cage part is up inside the HVAC assembly. The ones with cast aluminum heat sink is the ATC power module.

I *strongly* suggest buying the ones with the two large round transistors on them - like this one:(chrysler, dodge) (LH, 300m, concorde, intrepid) blower (resistor, power, module) | eBay
They are pulled from 1st gen. LH cars - are much more rugged than the ones that came in 2nd gens. The 2nd gen ones are known for burning out. The 1st gen. ones last forever, and are plug-n-play into our cars. Worth the 50 bucks (or pull your own for probably a bit less if you have 1st gen. LH cars in a yard nearby).

PM me your email address (munge your address to avoid the spam bots), and I'll send you the pdf of the How-To.
I was listening to a friend's directions on locating and removing the module from a junker. He had me tearing apart the lower part of the center dash behind the ashtray.
thanks, peva.
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post #13 of 29 (permalink) Old 10-23-2016, 07:17 PM
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Quote:
Originally Posted by lukas james View Post
I was listening to a friend's directions on locating and removing the module from a junker. He had me tearing apart the lower part of the center dash behind the ashtray.
thanks, peva.
You're welcome. Sounds like your friend was giving you instructions for R&R'ing HVAC door actuators. (Come to think of it, I don't know what the layout is in a 1st gen. Maybe that's what he was describing if y'all already knew about using the module from a 1st gen.)

Last edited by peva; 10-23-2016 at 07:29 PM.
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post #14 of 29 (permalink) Old 09-15-2018, 01:18 AM Thread Starter
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Hey y’all. So the typical overworked dad has collected some of the parts, received the .pdf instructions (thanks Peva!) and ripped apart my car to finally try and get this done. What I am facing is the purchasing of the resistor. No junk yards around me have these cars anymore for some reason, and eBay isn’t any help in purchasing harnesses, now that I have a loose idea of the car’s anatomy, so to speak, from my current rip down. Unfortunately, the guide Peva so generously provided is not of the “hack and splice” method but the “get the harnesses” method. As getting these harnesses seems impossible at present, I am in a bit of a predicament. I have the ATC head module and the sun sensor. The blower motor resistors come in a single hardware unit deal of ~$25 or that with the plug stubs to the resistor as well for ~$110. I really would like to just splice new wires and jury rig this thing to have the features and get a bit more comfortable use from the car before I finally let her rest. Is there anyone who could provide any information on how to splice in and complete this job without being able to procure harnesses? I did find another post where intrepicon? listed some confusing wiring information that seems incomplete, at best, and unclear. He said he would post a “how to” when confirmed working, and only seems to have confirmed it working. Please help, anyone, if you can, as my back seat is full of plastic covers and I am praying for a pro to weigh in!

-Brandon
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post #15 of 29 (permalink) Old 09-15-2018, 05:52 PM
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Not sure what you're talking about Resistors for. The ATC is going to use a Blower Control Module in place of the Blower Fan Resistor pack you have now.

I don't have any of the cut-n-pray instructions but I don't see why you couldn't figure out what's needed from the wiring diagrams in the 2004 FSM.
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