I have a problem with my 90 Amigo dummy lights.When I start it up the brake,seat belt,oil and gas lights come on and thefan won''t come on for the heater.But when I hit the throttle good and hard and take the tach up to 3,000 rpm the lights go out(except small flickering of the seat belt light)and the fan comes on.I also have a prblem with it when I shut it off after going 5-10 miles.When I restart it,it starts but dies off.No matter if Igas the accelerator after starting or not.Let it sit 10-15 minutes it''ll start right up and run fine minus the dummy lights.I switched the alternator,new battery,engine ground straps,pressure regulatorand fuel filter.Any help would be greatly appreciated.Thanks.