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Thread: What To Do About The Alternator

  1. #1

    Default What To Do About The Alternator

    I just bought an HP ECU, and I'm still planning out all the additional things I need to do. I'm building my own harness and everything for the ECU. But I just realized I hadn't thought about what I'm supposed to do about the alternator. I'll be using the stock GM alternator that came on my 2000 Monte Carlo, which I believe is a CS130D style alternator. I know about the 197-400 one wire alternator plug, but I don't know where exactly that needs to be plugged in, and if that's all I need to do.

  2. #2
    Join Date
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    Default

    Do a forum search for Holley 197-400, this has been discussed several times.
    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.

  3. #3

    Default

    @Wolven Scout: The 197-400 needs to go to a switched +12V source. It does not have to be integrated into the engine harness, or have anything to do with the ECU. Andrew

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