RM FD3S Coil Harness

Car Make: Mazda
Model: RX-7 FD3S

In some cases, the genuine coil harness of FD3S has deteriorated and the voltage has dropped.
Normally, it is around 13.5V, but it may drop to the 12V level.
If the coil voltage drops, it may cause misfire → knocking, so it is necessary to secure the voltage.
This will reduce the occurrence of misfires.
For those who use RM FD Power Coil & Power Igniter AV, there is a dedicated coil harness.