Ping Lorenzo at pinnovators. I think they have one already. I know for stern definitely but I think a bw one is either in the works or exists already.

What speaker upgrade did you use? Home made?

If you used an L-pad you wouldn't have to worry about any of that.

L-pads are wired directly to the speakers. They present an equivalent load to the amp regardless of volume setting. Mount the L-pad where you want it, run the wires to the speaker. Turn the main volume up to the max you want it to be. Close the coin door. Now you can adjust the volume from zero to your max without having to open the coin door.

Some L-pad info here:
http://www.bcae1.com/lpad.htm

The lpad would need to be wired to each channel separately. Personally, I like hot wiring the door open switch "open" better. As an FYI, the No Fear uses the same tda2030 amps that acdc premium used. A 12" is too much speaker for that amp. An efficient 8" would probably out perform it for that reason. This was all discussed in my acdc "massively improve" thread if you read it. I'm sure the 12" is better then the garbage that came with the game. But it really would need an amp to push some bass.

Nothing bad will come from it. I wouldn't worry. I think its mainly to prevent something jarring around and making settings changes when the game is being shipped or moved. In your home it makes no difference. To make the lpad idea with, you'd use a stereo capable lpad and wire backbox to left and cabinet to right.

You could run the coin door to an external toggle switch.

Not much. The coin door interlock disable was a holdover from the WMS 3-7 era 9 (& possibly earlier), when WMS was using reallllllllly crappy cabinet bottoms. What would happen is people would either punch out the speaker (when it was forward mounted) or drill/cut the bottom of the cabinet to get the coin box. After that, they'd play with the buttons to set the game on free play and/or something stupid like 10 credits / coin drop. With the coin door protection feature, if the coin door was closed then you literally can't write ANYTHING to the section of RAM that stores settings.

You can see remnants of this on some old machines, where they have a steel plate on the underside of the cabinet. Didn't fix the puch-the-speaker-out problem, though that slowly migrated to the back of the cabinet.

It technically also protects the RAM against an accidental write while powering up/down. But I think that's a technical possibility rather than a likelyhood. I have a few games where I permanently shorted the memory protect, and many years later have never had a problem with them.

Kind of tough to make changes to a game that's unplugged! Or are you envisioning someone pulling a Costanza Frogger move?

Haha that's a damned good point