Message #133337

[Caveoftreasures]

display harness upgrade cable

http://bayareaamusements.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=MC-500-6326-00

or

http://www.marcospecialties.com/pinball-parts/500-6326-00

Email to see when they have stock coming in.

Look at the maual to see how the cabling for the DMD is supposed to be, and go from there to reverse the hack. If u are unsure, find a local pinny tech incase the voltage to the larger dmd is potentially dangerous.
Also, the gobble hole sounds like a dirty switch or a switch which needs adjustment.
I always plug my machines into a power surge board, and always make sure your house has a safety switch activated/installed.