slant 6 to 360 swap ignition issue

[71Duster360]

I've swapped out a 71 slant 6 to a 74 360 with electronic ignition and I havnt got any spark at the coil. I installed a mopar orange box according to diagrams I've found online to the run side of the 2 prong ballast resistor, negative side of the coil and the other 2 wires plugged into the distributor. Do I need a 4 prong ballast being electronic or can I make the 2 prong work? Is this my issue? Both the slant 6 and 360 worked fine when pulled so I'm doubting the coil is at fault. Please help

 

[67Dart273]

I don't know whether any orange boxes are "5 pin" which require a 4 terminal resistor or not Frankly, I doubt it

Refer to the diagram and use an ohmeter to all other pins and the box ground to see if you can detect any continuity. Reverse the probes and do it again.

You have both the brown and blue coming out of the bulkhead hooked up?

If it's a power problem, and otherwise wired correctly, you can run a jumper to coil + and see if you have spark.

If not, wiggle all connectors, the ballast, the ECU, and the distributor pickup especially

The box MUST be grounded MUST be

With power applied, remove the dist. connector and take up the firewall end of that connector. Ground first one, then the other terminal (I forget which) One or the other should give you one spark snap every time you ground the wire

If you have a tach connected, try it unhooked.

 

[nm9stheham]

As above, use the 4 pin diagram here: http://www.allpar.com/fix/electronic-ignition.html

If it never fires while cranking, you may not have the brown wire connected in place. Jumper 12v from the battery direct to the coil + and try to see what you get; do this just long enough to test, don't leavea it in place.

 

[BillGrissom]

The 5th pin is usually a dummy on newer ECU boxes (check it w/ DMM to gnd). If so, all you need is a single ballast. Even simpler wiring is a GM 8-pin HEI module (and stronger spark), if not striving for an OE look. Even that needs the case grounded, which is most likely your problem. Rusty sheet-metal screws don't work.

 

[71Duster360]

Thanks to all who replied, I ran the coil straight to the battery as suggested and it worked. The timing was also off by a long shot, it's up and running without jumping the coil.