Marc A Levy <malevy@xxxx> wrote: > Dave- Have you measured the "jag" part with a meter?? What is the > maximum and minimum resistance? What does the taper look like? BTW, > thanks for the information and pictures you have supplied so far! Well, using my handy-dandy multimeter, I get the following, and bear in mind it's been about 12 years since high school physics: On the 2k ohms scale, I get a steady proportional range from .001 through .030. A little bit more and it jumps to 1 (open) The taper is a hexagon approximately 3/4" tall by 1/4" thick, with a small round spring loaded pin centered a shade less than 1/4" from the top of the post. I'm no electrician, but I do know it makes all the dash lights dim from off to full on with no problems so far. If it's from 1976, that means if it's a Jaguar part likely from 1977, so it's either from an XJS or an XJ6/12. Since the XJS appears to use something similar to a rocker switch, it may be from the XJ6. According to a Terry's Jaguar catalog, the XJS uses a different switch from the XJ6/12. Terry's lists this as as Jag part number 30886. Anybody have access to a Jag dealer locally that could check it out? -Dave