Dominator Large Engine Remote Start/Stop Kit – Honda GX390/GX630/GX690 Install Guide

Install the Dominator Large Engine Remote Start/Stop Kit on a Honda GX390, GX630, or GX690 (electric start). Harness-style engine connections. Shop the Large Engine kit · Need the Small Engine kit (GX160/GX200)? →

WILL NOT WORK WITH HONDA iGX800
Notice: Multi-harness versions of this remote kit have been discontinued as of November 2026.
WarningIf you have no electrical experience, do not install this remote — see a professional. Do not open the control box for any reason unless we instruct you to. Opening it voids the warranty.
Engines coveredHonda GX390, GX630, and GX690 with electric start. Also works with Honda CRX engines when wiring colors match. Not for GX160/GX200 — use the Small Engine kit. Not for iGX700 / iGX800.
Confirm before first large-engine shipThese steps reuse prior harness-based GX390 / GX630 / GX690 instructions. Confirm kits still ship with harness-style ends. Photos below are the current kit photography (same receiver/fob family).
Large Engine Remote Start/Stop kit layout

Receiver + loom + fob. Confirm harness-style ends on the unit in the box.

Boxed Large Engine Remote Start/Stop Kit

Packers: use box size 12×9×6.

1. Remote buttons

Orange remote fob upright
Button Function
C Engine Start (momentary)
D Engine Stop
A / B Unused on this start/stop kit

2. Safety

  • Do not open the control box for any reason unless we instruct you to.
  • Disconnect the battery before installation.
  • Verify every connection before reconnecting power.
  • Keep wiring away from exhaust and sharp edges.

3. Mount the receiver

  • Mount upright, protected from direct spray and heat.

4. Shared wire colors

Color codes are the same on Honda CRX engines that use this kit class.

Wire Function
RED Battery positive (+) or positive side of starter solenoid
BLACK Engine block ground
YELLOW Kill / stop circuit
GREEN Start / starter-solenoid circuit
Honda GX engine solenoid and harness connection points

Where it connects on the engine: starter solenoid / kill / start points on a Honda GX (from the P40 Dominator Remote Flush Guide — photo-engine-wiring-gx-example).

Color-coded wire ends

Color-coded ends (kit photography). Large-engine kits use harness-style connectors — match colors to the table.

5. Honda GX390

  • Red — battery positive or solenoid positive.
  • Black — engine block ground.
  • Yellow — disconnect engine yellow; connect remote yellow into kill circuit.
  • Green — disconnect black/white at solenoid; connect green into both sides.

6. Honda GX630 / GX690

  • Yellow Tap — tap to the yellow wire behind the control box.
  • Green Spade — disconnect black/white from starter solenoid; green spade into starter, black/white on top.
  • Red — positive post of starter solenoid / battery positive.
  • Black — ground bolt on engine.
WILL NOT WORK WITH HONDA iGX800

7. Power-up & operation

Voltmeter ≈ 12.0V. Hold C to start; press D to stop. Remotes ship pre-paired.

8. Warranty

30-day warranty. Incorrect wiring or opening the control box without instruction voids the warranty.

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