Whew, there are many steps in doing this, it is recommended you get a manual.
www.miatamania.com
or ebay.com
how to replace window motor ion 91 madza miata
There is no Distributor cap or rotor in a 91 Mazda Miata. All years of the Miata use electronic computer controlled ignition systems.
R12
they did not start the crankshaft sensor till 1992
how to remove crankshaft position sensor from 91 Buick Regal
how do you run the wire for the power windows on a 91 Mazda miata
Miata Starter is located on the passenger side of the engine at the bottom end of the engine block, slightly behind the oil filter. You can find images and info how to change it here: http://www.racecaddy.com/mx5/tech/starter-mx5.html
in the distributor
The demand had dropped a bit by late 91 (originally the stealerships were gouging) and you could get a nicely equiped Miata for around 15k.
Is it feasible and approximately how much will it cost to replace the air conditioner in my '91 Miata with a unit that does not use freon?
Battery in Miata's located in the trunk, just open the trunk unbolt the clams and unplug the vent lines, then get an new one and replace it, reconnect every thing and there you go. For more stuff visit www.MX5unleashed.com Have great Miata day!
same as the 1994