all you do is tap the signals. you will need an amp, but there are multiple ways to do this. i just use pots on the color lines as a few games had super strong red (like on a raw pce rgb mod).
None of my amps ever work. If this mod needs any kind of interpretation on my end (I don't see why it should, we all have the same LA) then I'm going to f*ck it up. I have learned this.
BTW, I f*cked around with the LA some more tonight and learned a few things.
First off, there seems to be a problem with the Sega PAC. While playing LDs with the Sega PAC in, or while playing an LA game the system randomly resets. I suppose I should open this thing up and check the caps.
Another thing, and this is a big deal, IMO: if you run the LA with no PAC in it...IT PLAYS LDS LIKE A NORMAL PLAYER!!! The system has a regular video overlay for time display, etc that isn't used when a PAC is installed. The stupid shitty "digital" button doesn't turn on when pausing CAV discs, f*cking up the video and whatnot. This can now be used as a regular player for fans of CAV discs. Big deal, for me anyway.