Predicta Holiday CRT wiring, and other questions

[AmigaMan]

Hello all.

I recently got a couple Philco Predicta Holiday's (one in fair shape, one in parts only condition). Both have rebuilt 6.3 volt 21FDP4 CRTs.

I'm planning on bringing the one I'm restoring up on the variac soon, just to see if I can get the CRT to show signs of life. If I can, it'll help me justify the electronic restoration time that will surely be involved. Both CRTs register on my Sencore Big Mack, not perfect, but they do show signs of usability.

The main concern at the moment is a wire which connects from pin 7 on the CRT to the chassis. The wire is separate from the others, and not part of the two main connectors. Since both sets came with the wire disconnected, I don't know where it's supposed to connect on the chassis side. Anyone know?

Is there anything else I should be aware of before bringing up the voltage? All tubes check out fine, the filament resistor shorting jumper (added when the set was modified for 6.3v CRTs) has been removed as per some recommendations, and I'll double check that there are no shorted filter capacitors. I plan on replacing all the paper and electrolytic capacitors, but I'd like to see if I can get the CRT to at least glow before I put in that kind of time. Let me know if that is a bad idea.

I'm aware that the chassis is tied directly to one side of the AC line, so I'm going to make sure that's the neutral while I'm working on it, always testing before touching.

I am looking for a copy of the schematics as well, if anyone can help me out there. I can no longer read the magenta colored stamped number on the chassis which listed the number, and I'm missing the back, so is there any other way to identify the chassis model?

Am I missing anything? I usually bring up the voltage in increments of 10v every 10 minutes. Should that method be modified for this set?

Any other Predicta related notes would be very helpful.

Thanks!