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94 t800 no mirror heat

Discussion in 'Kenworth Forum' started by gyayo2012, Mar 9, 2014.

  1. Mar 9, 2014 #1
    gyayo2012

    gyayo2012 Bobtail Member

    12
    1
    Sep 26, 2011
    acushnet
    0
    hey everyone im having and issue with the mirror heat im getting power to the switch it seems to be very little power tho, the solinoide is clicking but im not getting any power to the mirror or the end of the plugs, not to sure what ti make of it i chased all the wires and everything seems to be good no brakes no burns..has any one had this problem before? any help would be greatly appreciated

    Thanks
     
    gyayo2012, Mar 9, 2014
    gyayo2012, Mar 9, 2014
    #1
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  3. Mar 9, 2014 #2
    rank

    rank Road Train Member

    9,870
    113,173
    Feb 11, 2010
    50 miles north of Rochester, NY
    0
    Both mirrors or just one? It's almost always the mirror itself that causes problems with my '98 T800. Seems like I have to replace a mirror every year. I check them with an infra red thermometer. When they are working good they approach 100 degrees.
     
    rank, Mar 9, 2014
    rank, Mar 9, 2014
    #2
  4. Mar 9, 2014 #3
    CondoCruiser

    CondoCruiser The Legend

    19,726
    18,731
    Apr 18, 2010
    Tennessee
    0
    The way you describe the solenoid well actually it's a relay is bad. The clicking you hear it's energizing the relay but the contacts are burnt/wore. Check the output at the relay. The relay should have a little pin number diagram on it.

    Pin 30 is the battery hot and when the relay energizes it continues on out pin 87 to the mirrors. Check pin 87 with the switch on and check pin 30 and report back

    Pin 86 is ground, pin 85 goes to the switch.
     
    CondoCruiser, Mar 9, 2014
    CondoCruiser, Mar 9, 2014
    #3
  5. Mar 10, 2014 #4
    gyayo2012

    gyayo2012 Bobtail Member

    12
    1
    Sep 26, 2011
    acushnet
    0
    yes the relay is what i meant.. im getting constant power to pin 85 everything else is dead switch on / off tahnks for the reply very appreciated!
     
    gyayo2012, Mar 10, 2014
    gyayo2012, Mar 10, 2014
    #4
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