On my 87 gn with digital dash under the word turbo there ar 2 light 1 ins orande and 1 is red the come on when I hit the gas I imagine 1 is rpm and other is boost but not sure which is which and how can I fix this at home also when I start car it aways go klm and liters for gas is there a way to make it stay on gallons and mph the car is not from canada thanks