Wiring Diagram for Testarossa | FerrariChat
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Wiring Diagram for Testarossa

Discussion in 'Technical Q&A' started by tr328, Oct 10, 2006.

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  1. tr328

    tr328 Formula Junior

    Jun 19, 2003
    905
    Pacifica, California
    Full Name:
    Darryl
    #1 tr328, Oct 10, 2006
    Can anyone kindly help me with a wiring diagram for a 1985 Testarossa. I am having a problem tracing the wire from the radiator fans near the engine on the passager side. This side won't come on when the temperature reaches 195. Checked the fuses already.

    If you have a wiring diagram, can you please email it to me at [email protected]

    Thanks,
    Darryl
     
  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,931
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #2 Steve Magnusson, Oct 10, 2006
    Last edited by a moderator: Sep 7, 2017
    The first place you need to check is at the white connectors at the bottom of the fuse panel. Unplug the "j" connector (and you'll have to unplug the "k" connector first to get to the "j" connector) -- 95% chance IMO that you'll find "burning" trouble like that shown in the jpeg (pin 2 from the right if "passenger" means RH side, and pin 5 from the right if "passenger" means LH side) -- if (by a miracle ;)) those connection seem OK, give a shout, and we'll dig deeper:
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  3. Leotestarossa1991

    Leotestarossa1991 Rookie

    Sep 15, 2013
    1
    Union,, nj
    Full Name:
    Leo
    #3 Leotestarossa1991, Sep 15, 2013
    Hi, i have an immidiately problem with my 1991 testarossa. My pass radiator fan does not come on at all. And the driver side fan is on at all times. As soon as i start the car, the driver side fan is on immidiately, and even when the temp goes up at 190* 200*, the pass fan does not kick in. Can anyone help me identify which wires on the fusebox are for the pass radiator fan, so i can repair them, or at least have them rewired to a new power outlet or relay, i dont care if the pass fan stays on like the other one at all times. At least my car wont overheat until i find another solution to this problem. Please anyone
    [email protected]
     
  4. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,931
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #4 Steve Magnusson, Sep 15, 2013
    Have you checked the fuse for the RH (US passenger side) water fan first? If the fuse is OK, unplug the j connector and inspect the connector for the RH water fan as shown in the figure.
     

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