I would not necessarily say someone selling a battery holder needs better instructions (my pinballs did not come with instructions on where to put them, but I would guess not across a circuit board - just a silly example); more like anybody attempting to do electronic work and modifications needs to understand what they are doing before attempting. Otherwise, even a small job should be done by someone who is qualified.

@OP Yes, your wires originally "burned up" because all you did was wire 2 wires backwards and basically just created a short across your new battery holder. The blocking diode tried all it could to hold back the battery current; causing diode to get hot enough to melt things down. The holder you should have puechased for your game should have been one without the diode in the first place...

Luckily nothing got damaged during a mod to help prevent potential future damage.
Glad you got it figured out and that it is all working.

You did not ask how to do it, then follow advice. You hooked everything up wrong and as quick and dirty as you could, screwed up but claimed it seemed correct, then asked for help and that is what you got.

Were you looking for a snowflake hand out of how great a job you did and hoping there was someone else to blame for your ignorance?

Weird to complain to people trying to help...and not one person was off topic, overly rude, or offering bad suggestions....

Excuse me? That is inappropriate and uncalled for. I originally tried to honestly help you, but I refuse to engage in such childish, arrogant, offensive behavior.

I'm shocked that you would joke about any sort of domestic violence.

Homepin, you are so right. I am not always here helping, but I like to feel I offer my best advice I can. After nearly 25 years involved in coin op, I hope I have something to offer. People like this really make me question why I bother offering free advice (it isn't always free as you said) ... if it wasn't for the generosity of others to me, and the appreciation of many, these type of people would consume my soul and leave me bitter and not helping anybody.

To all those that were appreciative of advice from me, and all those that have helped me over the years, thank you.

And no, this is not to stir things up; I am honestly realizing how much I appreciate the good part of this community.