I built a small circuit for this. Installed a momentary push button in one of the blanks on the left side of the steering column & a timer behind there that taps into the dome light wires where the map lights are located. I'll have to do some poking to see if I can find my post about it. Works perfectly.
Here's where I posted about it -
http://www.mazdas247.com/forum/show...ee-panel-off&p=5249130&viewfull=1#post5249130
I've since relocated the timer to inside the dash because the summer heat was causing problems with the location at the roof that I had it. I've also rewired it with some transistors so I could eliminated the standby current draw from 1 of the relays. The timer module is a 6062, not 6092 like I had shown. If anyone is interested, I'll redraw the diagram to show you how it works now.