Brand: Cartek Automotive Electronics Ltd
This is the same 4-pin electrical wiring connector included with the Cartek Isolator X Pro. The four terminals are pre-wired with short pigtail leads to make wiring easier. Sold individually, one required per Isolator X Pro unit.
Wiring codes:
Black (Pin 1): to internal (latching) switch black wire*
Blue (Pin 2): to external (momentary-off) switches
White (Pin 3): to ECU or ignition coil +
Red (Pin 4): to internal (latching) switch red wire*
* Assuming the use of the Cartek internal switch, which is polarity-sensitive.