I assume you're working with a 1.6 ('90-'93) as the 1.8 NAs didn't use a separate igniter.
From the ECH, brown and brown / yellow are the triggers, +5 active-high. Black / white is "IGf", which is a confirmation going back to the ECU that the coil primaries are pulling current. Also active-high, though it may be +12 instead of +5 (can't recall.)
Between the igniter and the coilpack, white and red are the two coil primaries.
At the coils and igniter, blue (L) is +12.
Between the igniter and tech, yellow / blue is the tack drive signal. It's a +12 squarewave, active-high, whenever either coil is dwelling. (Basically identical to IGf)
So, all you need to do is supply +12 to the coils and igniter on the blue wire, and provide two active-high outputs from the BS to the brown and brown / yellow wires. Follow the 4G63 instructions, or do the following if you want it to be more reliable: A better Spark Out circuit.