Yep it sounds like you blew out your ignition amplifier which is locate on the drivers side strut tower.
Here is a guide that will show you how to use a volt meter
Here is the test (diagrams below)
NOTE: This test requires Mazda Special Service Tools (SST) or aftermarket equivalents.
Disconnect igniter connector.
Connect adapter (SST #49 N018 011) between igniter and wiring harness.
Attach 4-pin connector of igniter checker (SST #49 F018 002) to adapter harness.
Connect igniter checker power leads to battery.
Turn ignition switch "ON."
Disconnect high tension coil lead from distributor cap and hold 0.20 - 0.39 in (5 - 10 mm) from a ground.
Flip SW2 "ON" and "OFF" and verify that strong blue sparks are discharged from the high tension lead.
CAUTION: Do not hold SW2 "ON" for longer than one second.
Replace the igniter if it does not perform as specified.
Igniter Voltage Test
With tools connected as described above, turn ignition "ON."
Connect voltmeter to terminal of black wire on adapter harness.
Flip SW2 "ON" and "OFF" and verify that voltmeter pointer fluctuates. Do not hold SW2 "ON" for longer than one second.
Please let us know what happens so it will help others.
Images (Click to enlarge)
Saturday, April 16th, 2011 AT 8:05 PM