Thanks John. To be clear I wasn't saying that the boards were never in the boiler just that I never worked on a locomotive that had them there. Obviously, you guys have worked on many, many more locomotives than I have. I guess I got lucky on the few upgrades that I did. It doesn't sound like fun to fit the board in the boiler.
What about upgrading a Lionel or like 'Curve asked about a Williams locomotive? Where do you guys put the boards then since there is no original board?
For most upgrades, I put the boards in the tender as that's what the upgrade kit is wired for. I put one in a boiler and hand-wired it, but the rest have gone in the tender.