I have the same problem with my T-Type, when i start the car, and turn on the lights at night, my tach will stay on but dim, as will my headlights, but as soon as i rev the engine the tach goes off but my headlights get brighter, my radio works still, but my power antennae wont go down, and nothing lights up, except my interior lights, but unlike him, i have no problems starting the car.