ACS ALCOLOCK LR, Installation Manual

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ALCOLOCK LR
15
14.2 ECU wire-connection steps
1. Prepare the ECU wires: using the wire strippers, expose 1/2” of the ECU wires.
2. Place the supplied heat shrinks over all wires in the table below, except ECU
wires 1 (Red), 8 (Black) and 3 (White).
79-000252
• Wire 9 (Light Blue)
• Wire 10 (Blue-Yellow) x2
79-000251
• Wire 2 (Green)
• Wire 12 (Orange)
• Wire 13 (Brown)
3. Fasten a ring terminal (21-000022) to ECU wire 8 (Black). Using the tamper-
proof screw (45-000054), connect the ring terminal to a vehicle ground point.
4. Using the computer-safe test probe, locate a continuous (un-switched) source
wire of +12 or +24 volts, from the vehicle main harness. Test the source
wire by moving the ignition switch through all positions (including start and
accessories ). +12 or +24 volts must be present at all times.
NOTE: For vehicles with push-button keyless starters: refer to the vehicle instruction
manual for the ignition switch positions (e.g., start and accessories).
5. Expose 1/2” of the continuous (un-switched) source wire.
6. Twist the end of ECU wire 1 (Red) around the continuous (un-switched) source
wire.
NOTE: Twist the wire as follows:
7. Using the computer-safe test probe, locate a non-continuous (switched) source
wire of +12 or +24 volts from the vehicle main harness. Test the source wire
by moving the ignition switch through all positions. +12 or +24 volts must be
present only when the ignition switch is in the on or start position, and must be
absent in all the other positions.
8. Expose 1/2” of the non-continuous (switched) source wire.
9. Twist the end of ECU wire 1 (White) around the non-continuous (switched)
source wire.
10. Using the computer-safe test probe, locate the wire coming from the ignition
switch and going to the starter relay or solenoid (depending on the vehicle
make). This wire supplies the start signal.
11. Cut the wire (that supplies the start signal). Expose 3/4” of wire from each cut
end.