Help! no spark at coil

but when boxes made contact with body groud would cause coil to spark
Jeff

Of course it did, LOL. The ECU MUST be grounded

OH!!!! didn't I say that already?

..Make ABSOLUTELY certain the ECU is grounded.

As someone above also mentioned MAKE CERTAIN you have battery voltage to coil DURING CRANK. "Crank" and "Run" are different circuits.

You can also run a jumper wire from a battery source to coil + DO NOT leave it hooked up longer than needed to test.