...A minor point perhaps, but you don't have a distributor mounted Hall Sensor as Ign. CU input. The '89 and later B230 uses a "Crank Position Sensor" (a.k.a. RPM Sensor, Impulse Sender etc). I'm sure the FAQs cover it in detail.

If you have specific wiring questions, my 1993 940 diagrams may help. Post questions here or via email (see Profile),
--
Bruce Young,
940-NA (current)
'80 GLE V8 (Now gone)
'83 Turbo 245
'73 142 (98K)
'71 144 (track modified--and still here)
New 144 from '67 to '78
Used '62 122 from '63 to '67