After the second test drive I found the none of the instrument lights are working. I know I'm being lazy but, where, what color wire feeds the lights, where does it originate from? Does it have it's own fuse? It's a 71 #1718.
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.......panteraplace.com 'Electrical Diagrams'!
It's Either the Fuse, and/or the Multiple grounds.
MJ
Wires are black and yellow. Fuse is number three. Could also be the dimmer.
So, first I'll check the fuse then see if I have juice to the dimmer. Thanks.
I have 12 volts going to the dimmer and 4 to 11 volts coming out. It's got be a ground. Marker,head lights,blinker lights and license plate light work. I guess they are on the #3 fuse circuit. I'm looking for the ground wires where you said and it's not making sense, Can you give me a clue? The bulb fixtures are insulated and not self grounding. It doesn't look like all individual gauges have there own ground.
"The bulb fixtures are insulated and not self grounding."
If this is the case, then each bulb's socket should have two wires...one wire should connect to ground.
As posted above, the original bulb sockets were self grounding to the metal case of the gauge.
John
...Only the alternator (idiot) light in the speedo should not be grounded...that bulb will glow whenever the generator and battery are very different in voltage. The alternator lamp has a special 2-lead socket...All other lamps are grounded thru the gauges to chassis...
(and btw, I am ever amazed the quality of wiring capture documentation there on the Pantera...awesome job)--Lee
The turn signal indicator in the tach is also a two wire socket.
John
Just by rotating the lamp fixture in one of the instrument housing randomly I found the bad ground. All the dash lights work but, they don't get very bright. Are there some LED lamps available and are they reliable?
John, thanks, I forgot that even on this thread it shows the turn signal light on Pantera (different for the Goose). Also see the answer on the Pantera Electronics sight that the LEDs -will- work in both those spots. But there is also a note "consult factory" for at least use in the turn signal, and maybe a special adapter...Overall, it may be simpler just to use old fashioned lamps in those places and use the LED for the illumination.-Lee
(and eager to see a PWM dimmer for the LED lamps 
)
PWM dimmers are readily available from multiple sources. I purchased this unit during the reassembly of 2511 and have found it to be acceptable.
compared to the original dimmer this thing is minuscule and will fit just about anywhere, which was my motivation for the purchase
The gray portion at the back of the switch is a self vulcanizing rubber I used to encapsulate the wiring. I found it to be very thin and feared it to be overly susceptible to be damaged
https://smile.amazon.com/dp/B0...PBC0YZYGB1Q7GZR41N85
Larry
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Yeah, I mean one that works with the original dimmer hardware 
Just my engineering brain that wants to build a wheat-bridge comparator around the low-resistance original sliding Lucas (toggle-style) dimmer on a Goose...Lee