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Help with burned connector ID Pics.

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Old Jun 28, 2013 | 02:51 PM
  #1  
spittybays
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Default Help with burned connector ID Pics.

Trying to identify this connector circuit.
Found this burned connector while working on A/C. I Have an idea that its something on a fusible link to have that kind of amp draw and not pop a fuse.

I'm thinking blower motor although it seems to work just fine.
Thanks, Jeff.
 
Attached Thumbnails Help with burned connector ID Pics.-unknown-connector-001-600x450-.jpg   Help with burned connector ID Pics.-unknown-connector-002-600x450-.jpg  
Old Jun 28, 2013 | 03:35 PM
  #2  
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**Moved to Lighting and Electrical**
I am not sure what connection that is, but you should get better responses in the electrical section.
 
Old Jun 28, 2013 | 05:18 PM
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Certainly looks like a connector used in the blower circuit. What are the wire colors, and where exactly is the connector? What color wire is burned? Did you trace the wires to see where they go?
 
Old Jun 28, 2013 | 07:51 PM
  #4  
spittybays
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Looks like it goes pink, heavy black, heavy red, green and purple in that order.
Black may be beautiful but its also burned. As far as tracing one side goes into the main accordion from the pcm the other into a heavy electric taped mass towards the blower.
The entire mess is between the pcm and blower/evap unit.
As I look at it know under shady florescent.
Think in the AM I will do what I should have done in the first place, turn the blower on and see if it's wires get hot.
Getting old and slow.
Thanks Capt.
 
Old Jun 28, 2013 | 08:12 PM
  #5  
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1995 is the only year that I don't have a good schematic for Purple is used for the blower, and also for the starter solenoid, on most years. Red is usually hot at all times. Black is usually ground, (including the blower ground). Pink is usually hot with the ignition in the run position. Sorry to say, nothing definite there for you. Did you try disconnecting the connector and see what doesn't work? That might give us a clue where to start looking. Burnt connector/wire means something has excessive resistance, possibly a ground. Check resistance on the burnt wire, if it's a ground, it should be less than 5 ohms to battery negative, on both sides of the connector when it's plugged in.
 
Old Jul 3, 2013 | 11:10 PM
  #6  
spittybays
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OK here's how it went. Most definitely blower/ac circuit. With blower and a/c on unplugged and all went dead. When unplugged one side showed almost zero resistance to - battery. Plugged in and across connector 12 ohms. When a/c clutch engaged blower slowed and connector started to heat up. Pink was hot key on.
Fix, rather then go crazy looking for new connector and making ten unnecessary splices added jumper across connector. Loop splice, solder and tape, less then 1 ohm across connector.
No more heating up or slowed blower with clutch engaged.
Thanks Captain.
 
Attached Thumbnails Help with burned connector ID Pics.-burned-connector-009-600x450-.jpg   Help with burned connector ID Pics.-burned-connector-011-600x450-.jpg  
Old Jul 4, 2013 | 09:18 AM
  #7  
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Nice piece of work! The black wire is most likely the ground for the blower motor. The root cause could be a bad blower motor, bad blower motor ground to the body, or the connection in the connector may have just become loose. The yellow jumper wire must be as big, or bigger, than the original black wire or you'll have the same thing happen again, (excessive resistance). Check it often for heat, if it gets hot to the touch when the blower is running, look for another problem, possibly the blower ground connection to body ground, or a faulty motor.
 
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