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Thread: Early release 550-406 kit questions about wiring diagram.

  1. #1

    Default Early release 550-406 kit questions about wiring diagram.

    I laid out the harness for the kit, and the white wire that goes to capacitive discharge ignition that's supposed to be unterminated is not there, the yellow wire is. Did the early units that had the small controller have a different main harness?

    I'll be adding the extra pins for Inputs/Outputs, as well as for oil pressure, so I do not mind buying some extra pins, but what concerns me is if this ECU pin-out is different than the later models?

  2. #2

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    Danny, I believe I found it in this thread. Guess I need to go through this harness anyway. Do you have the part number for the pins used at the ECU connector? And a quick link to the ECU pin-outs?
    https://forums.holley.com/showthread...ts+output+wire

  3. #3
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    Quote Originally Posted by Bill C View Post
    I laid out the harness for the kit, and the white wire that goes to capacitive discharge ignition that's supposed to be unterminated is not there, the yellow wire is. Did the early units that had the small controller have a different main harness?
    https://forums.holley.com/showthread...078#post230078 (Related Forum Post)

    I'll be adding the extra pins for Inputs/Outputs, as well as for oil pressure, so I do not mind buying some extra pins...
    https://forums.holley.com/showthread...6524#post76524 (Related Forum Post)

    Danny, I believe I found it in this thread. Guess I need to go through this harness anyway. Do you have the part number for the pins used at the ECU connector? And a quick link to the ECU pin-outs?
    https://forums.holley.com/showthread...ts+output+wire
    http://forums.holley.com/showthread....als-Holley-EFI (Holley EFI ECU Connectors & Terminals)
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

  4. #4

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    Ideally I could view the original release diagrams, it seems Holley supersedes the old ones in their system. I also have an unknown 3-pin connector on this harness, and it's clearly factory installed.

  5. #5
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    Quote Originally Posted by Bill C View Post
    I also have an unknown 3-pin connector on this harness, and it's clearly factory installed.
    Read 2nd link in post #3.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS T/W 11R 205 heads, 232°-244° duration/.623" lift/114° LSA camshaft, 12:1 C/R, TFS R-Series FTI ported intake, BBK 80mm T/B, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 200A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, -6AN fuel system plumbing, Walbro 255 LPH pump, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, B&M Hammer shifter, FPP aluminum driveshaft, FPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 M/T Street Comp tires.

  6. #6

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    I was able to locate a manual from an early release Terminator. My particular unit does not have the wiring for oil pressure. It does have Fan #1, Fan #2 and the A/C, not sure if it's A/C IAC Kick or TPS based. The more I look at this harness it seems I may be money ahead to buy a universal unterminated harness when I switch to the MPFI setup. Basically it is a TPI/LT1, but I'll use the Holley Dual Sync, LSx coils, and the original TPI knock sensor. I only point all of this out to guys thinking the Terminator might be a bargain as I naively did, it appears my ignition connector only has six wires also. When switching to LSx CNP this could create other issues. At this point, I'll run it as is with the HEI distributor for break-in, then price out connectors & pins for its final wiring. Still, I got the 550-406 and the 3.5" TSLCD controller for right at a grand. Nowadays, a decent carb costs $700. No complaints. And I do have an HP, it's better than the Terminator X I was going to get. Moral of the story here? Buy the system that closely matches your car and final setup up front. Holley prices on the Terminator X systems is damn tough to beat!

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