Dear F. Oravec,
I'm not sure the engine size that you have, but for most of those models it says that the fuel filter is located under the vehicle on the left side of the fuel tank. Please note that there is a procedure to relieve fuel pressure that must be followed before replacing the filter.
The MAP sensor is on top of the engine near the intake manifold. To give you wiring colors I would need to know which model Lumina you have and the engine size.
〉 Answered on Nov 19th, 2007 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines