HELP 89 Bronco II No Spark

[MLB]

I've got an 89 Bronco II with the 2.9 with no SPARK, I have installed a new TFI, plugs, wire, dist. cap, rotor button with still no luck. I also have an 88' I swapped the known good coil and computer and still no spark. I bought this truck from a friend, while replacing the coil he crossed the positive and negative terminals on the coil after that is when it lost the spark. your help and ideas would be greatly appreciated. This is a nice truck, I would really like to get it back on the road. Thanks.

 

[B2-Bomber]

are you getting switched + to the red wire with green stripe at the coil? checked fuses? there is also a fusible link built into the main feed wire (black with orange stripe) but if that one had popped you would have lost power to many other things too.

 

[MLB]

I've got 12 steady volts at the coil terminals. Maybe the pick up coil ???

 

[B2-Bomber]

IIRC, the pick up coil in a TFI distributor creates an AC current "Hall-effect" signal that the TFI module (bolted to the distributor) converts into a square wave pulsing signal to be used for sparking/injector signal reference.

this style is difficult to bench test. You are certain that the tfi module is good?