Me thinks 2 relays (possibly) would be needed... Fact- if you remove the front passenger side switch, that window will NOT go up or down via the drivers side controls. This is why I figure the need for 2 relays. One on the drivers side switch and one for the passenger side switch. This is assuming, of course, you would want ~both~ the driver and passenger to be able to take advantage of the express down. One relay on the drivers side controls would do the trick for the driver, but I dont think the passenger would be able to benefit from it.
As far as Tim's express up/down.... Its via the alarm remote control. Don't think he has the ability to express down the pass window via the switch inside. As far as a dog or kid in Tims car.... That will NEVER happen, eh Timmy?
Thats all I know.
DAvid
98 SE Sport V6 ATX
lots of used Kirk parts