What causes the battery light to turn on above 2000 rpm and off below 2000 rpm when a new alternator and battery were installed on a Mercury Tracer two weeks prior?
The RPM change affecting the light seems to indicate that it's the alternator. Perhaps it has a bad voltage regulator? Maybe it's not the right alternator for your car?
Where is the neutral safety or reverse light switch on a 1993 Mercury Tracer and how do you replace it?
The throttle position sensor (TPS) on a 1994 Mercury Tracer is located towards the driver's side of vehicle, under the hood. Directly to the left of the battery will be an intake air hose with a metal screw-on clamp. This clamp attaches the air hose to the engine's intake manifold. To the left of the clamp with the be the engines TPS assembly.