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Thread: Need help wiring SAFCII into VPC harness

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    Why? Because Race Car. verified Feedback Score 0 akotten's Avatar
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    Need help wiring SAFCII into VPC harness

    OK, so I wanted to wire up my SAFCII into my VPC's harness and prepare it for installation. Only thing is, I'm still a bit confused as to which wires from the VPC need to be intercepted by the SAFCII. My VPC only has a blue, red, white, gray, black, and brown wire (these are what the VPC plugs into). On the plug-n-play harness, there ARE a few yellow wires that stick out the side because they have fuses or transistors in them (little plastic enclosures).

    Any help is greatly appreciated!


    -Alex

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    Quote Originally Posted by akotten View Post
    OK, so I wanted to wire up my SAFCII into my VPC's harness and prepare it for installation. Only thing is, I'm still a bit confused as to which wires from the VPC need to be intercepted by the SAFCII. My VPC only has a blue, red, white, gray, black, and brown wire (these are what the VPC plugs into). On the plug-n-play harness, there ARE a few yellow wires that stick out the side because they have fuses or transistors in them (little plastic enclosures).

    Any help is greatly appreciated!


    -Alex


    This is specific to the Supra installation, but the general principal is the same:







    The VPC output wire (should be yellow) connects to the SAFC Input wire (white); the SAFC output wire connects to ECU harness the same as it would without the VPC.

    If you have the plug n play harness, you may need to disconnect the yellow Output wire, as it comes pre-wired into the harness (thus 'plug n play'). That's the way I installed it on my Supra -- works perfectly. I leave the VPC zero'd and do all of the tuning through the SAFCII

    I would have replied to you on 3si previously, but I'm suspended for a week.

    1993.5 Supra TT 6sp Hardtop -- old school 74MM setup: 10.4 @ 138MPH 1/2 mile - 166MPH - new setup #'s soon! [Previously 468WHP & 11.3 @ 125MPH stock twins]
    1994 Supra TT 6sp -- 11.8 @ 118MPH basic BPU
    1999 3000GT VR-4 -- 12.5 @ 108MPH 100% stock w/ Chromed ECU tune
    2003 Denali XL -- Grocery Getter & Tow Rig -- Runs 13's! (mpg)
    Formerly:
    1994 Supra 6sp - 72mm, VPC, stock longblock -- 722WHP & 10.36 @ 139.5MPH
    1993 Stealth RT/TT; 2003 Corvette Z06; 1997 3000GT VR-4; 2002 Corvette Z06;
    1999 3000GT; 1992 Stealth RT/TT; 1993.5 Supra TT; 1993 3000GT; 1992 3000GT VR-4;
    1998 Trans AM WS6; 1992 Talon TSi; 1993 3000GT VR-4; and many others..

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    Does this harness look familiar?

    91 R/T TT
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    bump please

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