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Unread 07-24-2014, 02:32 PM   #1
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Join Date: Apr 2013
Location: Epping, NH
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heater box wiring HELP

okay heres what i have a 1985 cj7 with a tj tub i am installing a heater box, my problem is i have the cj wining harness and the box calls for a tj ill post some pictures if i can figure it out i'm new here and please don't post them crappy diagrams they are useless

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Unread 07-24-2014, 02:48 PM   #2
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1980 CJ7 
Join Date: Dec 2007
Location: Killeen, Texas
Posts: 924
Little confused about what you are asking. 1) you have a CJ-7 wiring harness. 2) You have a TJ tub? Are you sure it's not a YJ tub? 3) which heater box and controls are you using in the tub the CJ-7 or the TJ heater box?
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Unread 07-24-2014, 03:03 PM   #3
Mike Romain
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1986 CJ7 
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Sounds like you need 2 of them crappy diagrams, one for the CJ heater wiring and one for the TJ heater wiring. That way you can hot wire the TJ setup. Otherwise, this is a CJ group, most of us have no intimate TJ knowledge here.
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Unread 07-24-2014, 07:00 PM   #4
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i have a cj, i know its a 2000 tj tub and i have a tj heater box but i need to know how to hard wire it so i can have defrost for the fall i can seem to figure it out iv been at it all day and all i can get is a buzz from the relay
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Unread 07-26-2014, 04:38 PM   #5
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The cj wiring doesn't use a relay, power comes to the switch, then to a resistor on the heater box itself so you can have variable speed, then to the blower motor. motor is grounded to the body.

If your using the cj wiring harness, wire it directly to the blower, and make sure you either hook up the resistor found in the upper cj heater box or cut that wiring out and have one speed.
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