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Unread 02-01-2012, 04:00 PM   #1
hoverusa
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Heating control connector

Help! I'm looking for a source for a specific 2000 Jeep wrangler electrical connector. It plugs into the rear of the heater controls right next to all of the vacuum lines, I believe it to be the main power feed to the controls. The connector is marked PED 4 with an A B C under and has 3 wires, black, green and a smaller lighter green wire. I went to a dealer, who couldn't even find it in their schematics. Any source would be greatly appreciated!
TIA!

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Unread 02-01-2012, 05:01 PM   #2
Rubi4MyMrs
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It’s the C-3 connector & actually the 2 heavier wires are the main grounding wires for the blower motor (B&C). The smaller one (A) is for the A/C compressor control (also a ground). If you can’t find one & I’m sure the dealer will tell you that you need a whole harness or something you may have to put a terminal end on each individual wire & attach it that way. Keep tract of which wire goes where. Here is a diagram that may help.
jeep-hvac-schematic.jpg  
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Unread 02-01-2012, 06:29 PM   #3
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Pin C3 B is the 12vdc feed to the HVAC mode select switch.

Pin C3 C is the mode select switch ground.

Pin C3 A is the discrete input to the PCM for A/C operation... IIRC
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Unread 02-01-2012, 08:54 PM   #4
Rubi4MyMrs
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No. The C3-B is a ground wire, the 12v feed is at A on the motor. The B side is the grounding side which goes to the resistor & the 7 position on the blower speed switch. From that switch either from the 7 position or through the resistor to positions 8,9,&10 to C1-E & around to C3-B. When the mode switch is any position except off (0) it is grounded through C3-C.

The C3-A does go to the PCM but also sends a ground signal when the compressor needs to be switched on, as I read it.

Either way, the OP needs to keep tract of where each wire goes if he has to wire them individually.

OP, there MAY be a harness repair part for this. I believe Chrysler does supply such a thing for some applications. Don't know if for this. You may need to find a better parts man
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Unread 02-01-2012, 09:15 PM   #5
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Junkyard... Even though wranglers are hard to find in the scrap yard some cherokees should be the same, I believe. I know with the resistor, resistor wiring harness and plug were the same on some models. When I had a burnt out resistor plug in my 01 TJ I went and searched out cherokees and grands and found a few good plugs. I feel your pain, even though the dealer originally found the plug I needed they wanted almost $60 for one!!! Screw that, the u pull it yard charged me $2.66 a piece for each plug and harness!!! And that was with a used but good resistor attached to it!! Those go for almost $50 at NAPA. So all in all check for compatibility with cherokees then head to a u pull it yard and save some cash...
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Unread 02-01-2012, 09:30 PM   #6
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Quote:
Originally Posted by Rubi4MyMrs View Post
No. The C3-B is a ground wire, the 12v feed is at A on the motor.
Yes.

C3 B is the input feed to the mode select switch, C3 C is the ground...
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Unread 11-21-2012, 08:25 PM   #7
jnbarnes89
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is there any reason that the black and green wires would be spliced together on my c3 connector just bought the jeep 2000 tj se light green wire is normal?
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Unread 11-21-2012, 10:15 PM   #8
Rubi4MyMrs
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Yes, the mode switch is probably bad & that is a way to get the blower (fan) to work. Normally when the mode switch is "off" the fan is off & when the mode switch is in any other position the fan runs at whatever speed is set be the speed switch. If that part of the mode switch goes bad the fan won't run at all. By jumping those 2 wires together is eliminates that problem (without getting a new switch). A different set of contacts works the A/C (light green wire) when needed so that wire is left alone since those contacts are apparently OK.
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Unread 09-09-2013, 10:25 PM   #9
mjcother
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68080536AA is the new connector repair kit for the C3 'vacuum switch electrical connector', I know the thread is old, but figured the part number may help someone else. Mine was melted, however the switch was fine, I scratched off the melted plastic to get the fan working until I could get the connector. At the time of this post, the MSRP was $42.60, wholesalemopar has it for just over $30.
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Unread 09-10-2013, 12:30 AM   #10
nichelsond
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http://www.amazon.com/Jeep-Wrangler-...glink121868-20
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Unread 09-10-2013, 07:29 AM   #11
mjcother
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that is the switch... not the electrical connector that plugs into it that gets melted... anyone can find that with the google search: wrangler heater mode switch

try finding just the pigtail without a trip to the dealer to see if the parts guy is smart enough to know how to find the connector part number... or buying the entire 56010108AH (2000 hard top, the soft top 56010104AH does not even come up anymore in the mopar catalog) harness at $1285 MSRP

Thinking, why is this dinky connector rated for the amperage of the fan, but one for the same current in residential use 10x the contact area? It is not like heater fan connectors have been melting for over 40 years or anything....
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Unread 09-10-2013, 02:33 PM   #12
Ross
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When mine melted I took the switch to a car stereo place and had them solder on new leads and spliced it back into the wiring.
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Unread 09-10-2013, 02:54 PM   #13
mjcother
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Quote:
Originally Posted by Ross View Post
When mine melted I took the switch to a car stereo place and had them solder on new leads and spliced it back into the wiring.
probably the best solution for the masses, just solder and heat-shrink 4-6" pigtails of the same gauge on and then you can solder into your system and have enough for the next time, or you can put some connectors on that have more surface area than the stock POS connectors. Grab an electric fan connector from the junkyard, they are rated 40A or so...
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