1990 Miata Radio Wiring Diagram Miata megasquirt ms2 signal rpm pinout wont power starting mazda miataturbo standalone finir Low rpm signal, no spark Low RPM signal, no spark - Miata Turbo Forum - Boost cars, acquire cats. Low RPM signal, no spark - Miata Turbo Forum - Boost cars, acquire cats. Check Details ← 1990 Miata Engine Diagram 1990 Miata Wiring Diagram → Share with friends Link copied