Wiring for VT Ecotec Engine Power

Holden/Delco Tuning. ALDL, OBD 1.5. Circa 1989 to 2004.
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Wiring for VT Ecotec Engine Power

Postby Stag76 » Sat May 23, 2020 9:16 pm

I'm fitting a 3.8 VT Ecotec to a Triumph TR7, and can't work out where the power supply for the ECM, Injectors, coils etc. comes from.
I'm guessing it is via the three plugs near the brake booster, but can't find a pin-out for them.
Does anybody have the pin-outs, or can tell me what to connect up.
I have the VATS disabled.

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Re: Wiring for VT Ecotec Engine Power

Postby vlad01 » Sat May 23, 2020 9:59 pm

Its the 6 pin rectangular plug near the booster. Red with black stripe is constant power from battery, red is switched power via relay via the ignition switch. Make sure they are fused.

There is more there like fan, temp gauge, oil light etc. I haven't got an ecotec diagram but I'm pretty sure the colours are mostly the same from the earlier models.
I'm the director of VSH (Vlad's Spec Holden), because HSV were doing it ass about.

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Re: Wiring for VT Ecotec Engine Power

Postby pman92 » Sun May 24, 2020 9:39 pm

Yep it's the 3 plugs near booster

Check out the diagram I posted here
viewtopic.php?f=32&t=5982
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