Correct me if i am wrong but one wire should be connected to ground on the board and one wire connected to the tx and rx pins. You connect the ground wire to terminal (A) on the aldl connector from the ecu. If you have a 160 baud unit you connect the tx/rx to pin (E) on the aldl terminal and if you have a 8192 baud unit you connect the tx/rx wire to pin (M) on the aldl terminal.
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