Trying to repair this old hand held D/T indicator

[wildmaninal]

Hey for those who haven't seen the thread on the "lake temps" in the freshwater fishing forum. I have an older Waller Corporation Digital Depth/Temperature Indicator. I've had it for over a year and haven't got to use it due to bad/brittle wires. I must of resoldered some of the broke wires into the wrong spot, now I have no clue on where the wires go. I can't find any info on the net about this old thing, would like to get it working.

Any of you old school fishermen have one of these still? If so I need a pic of the circuit board.