Holley Terminator X EFI - Wiring Harness Installation and Suggestions @ScannerDanner
Holley Terminator X EFI - Wiring Harness Installation and Suggestions  @ScannerDanner
Uploaded October 2025 | Updated September 2026, 3 weeks ago
In this second part of our Terminator X Stealth installation we are installing the harness and computer. This will be a nice detailed review for anyone interested in installing one of these systems and will answer many of the questions people will have. Here is a link to part 1 where we are installing an in-tank electric fuel pump in a 78 Dodge Power Wagon youtu.be/JKOgIR9LrTE

Holley Terminator X wiring diagram pdf
documents.holley.com/0e6992fcbea20610d28b5e03b0ba55e339d5323f.pdf
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00:00 - intro of my 78 Power Wagon
01:20 - planning your harness routing
04:00 - why we want the ECM inside the car
05:00 - modifying the fuse locations and why
08:29 - MAP sensor and fittings
10:00 - main harness plugs
14:08 - "inputs/outputs" and "power tap" plugs
16:31 - "loose wires" what are they for?
17:11 - ignition system wiring
20:48 - detailed wiring diagram overview
24:29 - details and setting of the input/output circuits
26:55 - what is the yellow wire for?
27:46 - diagram of the "power tap"
31:43 - what is the "bulkhead"?
33:08 - my thoughts so far
35:35 - HP and Torque of my 483 Stroker
36:00 - a quick burnout!

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Holley Terminator X EFI - Wiring Harness Installation and Suggestions

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