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Holly terminator help

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Old Jan 7, 2025 | 12:32 PM
  #1  
Ethan Lesz's Avatar
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Car: 1989 Firebird Formula
Engine: LS2
Transmission: T56
Axle/Gears: 8.8 Rear end from hawks
Holly terminator help

Does someone have any photos of how they mounted a holly terminator and how I need to wire the fuel pump?
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Old Jan 7, 2025 | 02:08 PM
  #2  
17RamGTA's Avatar
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From: Nebraska
Car: 1989 GTA
Engine: 383/ procharger P1S-C
Transmission: T56
Axle/Gears: factory axle 3.73's
Re: Holly terminator help

I mounted my Terminator ECU on the passenger side under the dash, as far as wiring the fuel pump, I used the green wire to trigger a relay for the fuel pump. I mounted a 40amp relay close to the fuel tank.


Last edited by 17RamGTA; Jan 7, 2025 at 02:12 PM.
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Old Jan 7, 2025 | 02:15 PM
  #3  
Ethan Lesz's Avatar
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Car: 1989 Firebird Formula
Engine: LS2
Transmission: T56
Axle/Gears: 8.8 Rear end from hawks
Re: Holly terminator help

Where did u go with the wiring for the holly?





Originally Posted by 17RamGTA
I mounted my Terminator ECU on the passenger side under the dash, as far as wiring the fuel pump, I used the green wire to trigger a relay for the fuel pump. I mounted a 40amp relay close to the fuel tank.
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Old Jan 7, 2025 | 04:27 PM
  #4  
thatsupnow's Avatar
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From: Armstrong B.C.
Car: 1991 camaro Z28
Engine: Forged 370" LS turbo s488
Transmission: Built 4L80e FTI converter
Axle/Gears: MWC 9" 35 spline 3.25 gears
Re: Holly terminator help

Originally Posted by Ethan Lesz
Where did u go with the wiring for the holly?
After you pull the factory stuff out string the harness back thru the hole the factory harness went in and up into the engine bay. You should have enough harness length to reach everything no problem. The fuel pump green wire you can use it to trigger the factory relay depending on what fuel pump you are using but ideally use the green wire to trigger a bigger relay then off to the pump. When I had an HP unit in my car I had it mounted in the factory ecu spot it fit perfectly
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