[DeTomaso] I got the spark issue resolved, but...

[JDeRyke at aol.com]

The dome light is wired in parallel to both door switches AND the Courtesy 
light switch, so you have a few choices to look at. But because they are all 
grounding-switches, all you probably need do is look for a loose wire or 
frayed insulation. The bad part: the dome light's translucent plastic cover 
gets brittle with age and requires you to squeeze it to remove for 
examination, so be gentle!   There are red courtesy/warning lights in each door just 
below the latches; are they on, too? Good luck- J Deryke