Diagram of fuse box for 2003 mazda tribute on a 2003 Mazda Tribute

SOURCE: does a 2005 mazda tribute 2.3 having timing belt or chain

a belt

SOURCE: spark plugs

You have to remove the intake (and the manifold) just to get to them. They are on the engine like every other car but access is trying because you can't even see them until you start removing the above items. If you still aren't sure where all of this is, follow the plug wires from the coil pack to the plugs. If it does not have wires, it will have individual coils on top of each plug. Unbolt each coil and pull it up. The plug is under it. On your V6, they should be located on the side.
This is very tricky on this vehicle. It is, of course, recommended to take it to a shop. Some special tools may be required.

SOURCE: Loud whining noise on left turn (Mazda Tribute 04)

sounds like a wheel bearing maybe faulty from your text it sounds like it could be the osf you could try jacking vehicle up with engine off handbrake applied and in neutral spin the wheel and see if it makes noise or wiggle it to see if it has any play possibly take off greade cap and see if any grease in bearing /

SOURCE: How to remove rear wiper arm on 2003 Mazda

lift the arm outward and a tab will show at the base of the arm. Pull it outward (the tab) and simply pull the arm away from the mounting stud

SOURCE: I need a serpentine belt diagram for a 2003 mazda

My sincere apologies for the delayed response.
I am personally going back to answer your unanswered questions.

I do not know if you still need this information, but I am going ahead and answering it anyway. You may want to Print the Diagrams for future use.

CLICK on the following LINK. It has the Belt Diagrams you will need.
If you would: Before Clicking: Let me know if this helped you, or if you have any additional information or questions. Feel Free to contact me at FixYa.com!
Again my apologies...
http://www.2carpros.com/car_repair_information/year/2003/make/mazda/model/tribute/2003_mazda_tribute_drive_belt_routing_diagram.htm