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Thread: Extending Dominator power harness.

  1. #1

    Default Extending Dominator power harness.

    Need 6 more feet on power harness to get to battery. Anyone with recommendations. I saw they recommend extending the 10 AWG on the harness with 8 AWG. Just wondering their thought process. Thought about non-insulated butt connector with heat shrink and then encasing in similar loom as on the harness. Thoughts?

  2. #2
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    Quote Originally Posted by rick539 View Post
    Just wondering their thought process.
    Holley doesn't know how much a user might lengthen their main power harness, so they're specifying the next larger AWG.

    Thought about non-insulated butt connector with heat shrink and then encasing in similar loom as on the harness.
    I lengthened & relocated the fuse on my main power harness the same way.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 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, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, 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 & MT 245/45R17 tires.

  3. #3

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    Danny, how many amps max does the ECU draw?

  4. #4
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    Look at the size of fuse Holley puts on the power harness, and it'll be under that.

  5. #5
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    It's a 40 amp fuse, but the ECU will draw different amperage depending on the fuel injectors, ignition system & I/O used. Clamp an amp probe around the positive wire to determine amperage draw.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 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, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/3000 RPM converter, 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 & MT 245/45R17 tires.

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