Trailing plugs are not firing, here's what I've went through already.
12 volts to both coils (msd blaster)
.9Ohm to both
Dist cap is fine
Plug wires are fine
Have power at both igniter plugs
Both igniters are working, I swapped leading and trailing and it runs the same with no tach signal, trailing plugs still don't fire. The leading plugs are a nice golden brown and trailing are wet with fuel.

 

If no tach signal with EITHER igniter in trailing position... causes could be a break in wire coming from trailing ignitor to trailing coil. This could be checked by testing for continuity between disconnected trailing ignitor plug and -primary wire at trailing coil using an ohmeter. Other possibility is trailing coil has a problem. Both primary and secondary side of coil should be tested-disconnect all wires from coil(s) Coil you mention should have primary 1-3 ohms approximately and maybe 6k ohms for secondary. Test results can be compared to leading coil (that works as car runs) and both coils should have nearly identical specs. You can swap coils and see if problem follows swapped coil. Also look closely at trailing section of rotor & cap. Could also remove trailing ignition coil wire from cap and hold about 1/4"from a good ground and see if spark is available there-if so then rotor,cap,plug wire problem. Plug wires can be ohm tested also(they can look fine and not be).

 

Thank you, I'm going to go through everything again later tonight and then I can post some numbers and be more detailed.

 

Problem solved, sorry guys hadn't had a chance to get to looking at it too much and posting numbers like I said I was gonna do, my bad. Problem was the plug on the trailing igniter. Loose connection in the igniter plug itself. Thanks for all the help, it helped me, and hopfully can help someone else

 

Good deal! No $$$,parts fixes are the best & satisfaction of finding and fixing problem. Thanks for post back,may help someone else down the road.