OP: Sorry for not getting back to you in a timely manner regarding repairing your clock.
The connector is accessible, as others have said, by tilting the glovebox down and outwards, The connector is typically wrapped in sticky foam at the back left of the cavity, about 2/3rds up. The best way, in my experience, to find the wires is to unseat the clock from the dash and tug at the wire harness on the back while feeling the wires at the left back of the glovebox cavity. It is there, it is accessible, and annoying but doable.
Something to note is that the Loyale uses a a different connector than do the pre-Loyales. (There may be some crossover a little earlier that I do not know about.) The Loyale takes a 4-position connector while the earlier EA82s take a 6-position connector with only 4 positions populated. (XTs may be some exception: They are mounted differently and I have never pulled one.)
The resistor is a 2 watt 75 ohm resistor. It is used to drop the voltage from 12+V to 5V, and dissipates far too much heat for its rating and mounting. A second resistor drops the 5V down to around 2V to be used by the display. If either one of those, or a couple other parts, have a bad solder joint (Can't tell if they are good just by looking at them), then the display won't function.
I have started repairing clocks again, having gotten a decent supply of resistors, a couple spare clocks, and the time to start up again. I am also mounting the resistors somewhat differently, using the entire inch or so of leads on each end to act as heat dissipators.