Just got a different ScructureScan HD module and the exact same thing is happening!
I'm just testing to see if the module is powering up properly, so I attached the black (- neg) and red (+ pos) wires to the battery (which reads 13.79 volts).
Then whenever I touch the yellow wire to the positive terminal the power light on the module will blink one time.
I tried to hold the yellow wire on the terminal and still only one blink as soon as I touch the wire to the positive terminal.
When I move the yellow wire on and off the positive terminal, the power light on the module will blink only 1 time each time I touch the yellow wire to the positive terminal.
Continuity in power cable is fine.
Keep in mind that I'm just testing the module before I actually install it properly.
Anyone have any suggestions as to what I should do now, or what I'm doing wrong????