I purchased an LT1 Scanmaster off this board, read and followed the install directions x 5 or more, and I still don't get any data recordings. I used the recommended connector on the white(data) wire to connect in to the lower right hand port on the aldl (OBD1-1994 z28) and nothing happens. When I turn on/start the car the unit comes on, flashes some zeros like it's booting up, and the screen goes dark. When I'm driving still no data readings. I'm planning to splice into the tan wire on the back of the aldl, but am not optimistic this will help.
Is the a "power test" for these units? I'm thinking the data line from the scanmaster is bad. Would welcome ANY suggestions/help; this is SO frustrating!
Thanks!