Ok I have an idea,,, if you take the button and light kit from
http://www.hulkster.net/empeg/buttons/ web site (Waiting for him to contact me)
Instead of Routing them into the empeg circit I suggest using the Empty Connector on the back (I don't use the aux in but there is an Open spot other then that)
You can route the light controls to the dash Dimmer on the car/truck this would allow 3 things
1. The Lights won't blink when you press a button
2. You can control the brightness
3. You don't need to take the chance of Soldering something wrong and blowing up your Empeg
Ground is common so you only need to route out one wire to the connector on the back of the empeg and route that to the car dimmer Via Some sort of voltage step down system (Or get 12V leds)
You might need to drill a small hole in the board to pass the wire(s) for the leds out to the conector
I am sure alot of you are smarter then I am give it some thought and let me know what you think.
Joe