I've stuck a post up on UKVAC about this but its worth picking the brains of you clever people on here as well 
So the plan is to wire a Sega Megadrive into my new Dino King but I know sod all about arcade cabs so trying to gather as much info as possible before I start. There are 4 areas I think I need to figure out:

Cheers

So the plan is to wire a Sega Megadrive into my new Dino King but I know sod all about arcade cabs so trying to gather as much info as possible before I start. There are 4 areas I think I need to figure out:
- Connecting to the Dino King monitor - I'm told that the Dino King is an RGB monitor and I know that the Megadrive 1 outputs RGB so is this as simple as buying a cheap RGB Scart cable off Ebay, chopping the Scart connector off and wiring it to the Dino King monitor cable...or am I not that lucky? @huggers I know your mate said get various adapter cables but I don't think the monitor is actually VGA it just uses that connector.
- Connecting a controller - hoping this is just a simple pad hack to the joystick and buttons. Is there anything I need to watch out for here?
- Powering the Megadrive from the Dino King power supply - I don't want to run a 2nd plug to power the Megadrive and assuming it needs 12v can I just chop the plug off the PSU and wire it to the supply already in the Dino King?
- Getting the sound out of the cab speaker - not really sure about this one. Can I wire the cab speaker directly into the headphone socket on the Megadrive or do I need to go through the sound amp (assuming the Dino King has one)? Can I do something with the sound through the RGB Scart cable mentioned previously?

Cheers