Take it to a dealer. The air bag won't work while the light is flashing.
No.
Follow + battery cable should connect to solenoid
No, the 1993 Mazda Protege DX does not have an airbag. The vehicle does have a passive restraints system and is extremely reliable.
For my Mazda I use 10w-30
no
you will have to get from Mazda or buy a used one
it has one
6x5.5"
no
It is important to know where the parts are within a car. The horn relay in a 1993 Mazda Protege is found in the cars fuse box.
most parts are yes. most parts are also interchangeable for ford probes of the same year range (excluding body parts of course --- Many interchangeable parts on 1993 Mazda Mx6: 1993-1996 Mazda 626 1993-1996 Ford Probe some parts off the Mazda MX3 some parts off the 1998-2003 Mazda Protege some parts with 1996 are not compatible due to OBDII legislature, which changed emissions and other changes.
The error code 68, on a 1993 Mazda, is a reference to a computer problem. The problem should be addressed by a certified mechanic.