Need some hel retrofitting new PT into 70's Dual Showman Rvb

[Jonny toetags]

I need a little help wiring up a new Classictone PT into a Dual Showman Reverb.
Here's Classictone's layout: http://www.classictone.net/40-18004.pdf
What I'm curious about is:
-the orange on the CT PT
-which red w/ stripe goes to the rectifier diode area. The orignal had a red/blu going there as well as the dual reds.
-the stock PT also had an extra pair of yellows? going to ground.
The stock design has an artificial center tap off of the pilot light to ground.

Here's the stock PT in place:

[The Dude]

The orange goes to ground (shield) and probably didn't exist on the original transformer. The 2 reds are for your B+ supply. The red/yellow is the B+ center tap (ground). The red/blue is for your bias supply. The artificial center tap is for the filament supply (green wires).

Here's the schematic:

[Jonny toetags]

The orange goes to ground (shield). The 2 reds are for your B+ supply. The red/yellow is the B+ center tap (ground). The red/blue is for your bias supply. The artificial center tap is for the filament supply (green wires).

Here's the schematic:

[ATTACH=CONFIG]34765[/ATTACH]

OK. So basically the red/yel doesn't get connected.

[The Dude]

The red/yellow (center tap) goes to ground as shown by the "triangle" in between the rectifier diodes on the schematic.

[pdf64]

The stock PT looks to have a strange arrangement on the heaters, see post #1; one leg goes to a tag strip terminal, then a length of bare wire links from the tag terminal to the pilot lampholder.
Maybe the bare wire is intended to be a fuse?

[The Dude]

......Maybe the bare wire is intended to be a fuse?

I believe so, yes.

[Jonny toetags]

The red/yellow (center tap) goes to ground as shown by the "triangle" in between the rectifier diodes on the schematic.

ok.
so red/yel go to ground and the red/blu goes on the small board next to the 2 red wires (basically same as original PT)

regarding the wire fuse...should I leave it as is or wire it as usual for the heaters?
I stupidly removed that wire and put a better quality wire. I never thought of it as a fuse

[The Dude]

I can't tell enough from your pictures to know what "on the small board next to the 2 red wires" means or if that's correct. The red/blue wire will go through a resistor to the lone diode that is used to create bias. You should be able to tell where it is by looking at what's left of the old wires and seeing which one goes to that point in the circuit.

As far as the "fuse" wire, I've only seen a few of the old Fenders that have that wire. IMO, I wouldn't worry much about it as long as the amp is fused properly. That's just my $.02.

[Jonny toetags]

I can't tell enough from your pictures to know what "on the small board next to the 2 red wires" means or if that's correct. The red/blue wire will go through a resistor to the lone diode that is used to create bias. You should be able to tell where it is by looking at what's left of the old wires and seeing which one goes to that point in the circuit.

Yup..that's where the old red/blu went...to a resistor then lone diode.

[gui_tarzan]

Is the power switch on the neutral wire on the original transformer? Yikes!

[loudthud]

On some old Fender schematics you will see one or two resistors between the heater wires (green) and the pilot light. These protect the transformer when one side of the pilot shorts to ground. This will happen when you try to remove the lamp with the power on.