Hello steven.vuyk,
What's odd that you say that do not work both coils.
What really can be.
Because the coils get together both on the red / white wire to (+) power, and only about (-) for once "organge" and even "gray" supplied by the TCI.
Try, if not a broken wire, from the TCI to the ignition coils.
If a TCI is broken, still works most of the channel (spark plug)
Sorry for this bad English, but I'll take the Googel-translator to AID