trunk right side.......
http://www.batterymart.com/p-12v-mazda-miata-battery.html this should help
The battery is a Mt-MX5. This is a Interstate battery part#. fits 1990-2008 Mazda Miata. Go to interstatebattiers.com to find a dealer near you.
On a 1991 Miata, the battery is in the trunk. It is probably the same on the 1990.
In the trunk.
According to Kelley Blue Book, the estimated value of a 1990 Mazda Miata in excellent condition with approximately 150,000 miles on it is $2,400.
is it under seat
The 1990 model of Miata came with a 1.6L DOHC engine and produced around 120 horsepower.
It's in the trunk on the far right side.
In the trunk, passenger side
Trunk right hand side
1.6 Liter Straight 4
1 Quart