Barracuda not starting after being parked for five years

Well, 10v is good news.
But your spark-test sucks.
Pull the coil wire out of the cap instead, and stick something in the end that will stay in there. Then near-ground that thingy, about 1/4 inch airgap or less will do it, now crank it.Waitaminute!!, make sure there is no gasoline anywhere near it and especially not under it.
Now crank it; you should see a stream of sparks. If you don't,
check that the rotor is turning. If yes
then hotwire the coil with full 12 volts from the battery and key off. Take that buster! If still no spark,
then clean the ground between the ECU case and whatever it is screwed to. This has to to be grounded to the battery. Your battery has to be grounded to the chassi to complete the circuit.
If still no spark, check that the reluctor gap is somewhere between a bit more than zero and less than .025; I think the spec is .008, and if it is then
ohm out the pick-up. IDK the spec on that, maybe 350 ish .And if you got that,
then check the coil resistances; IDK the specs on that either but look for about 1ohm on the primary side and more than 1000 times higher on the secondary.If you got that,
then replace the Ecu, and try again.


Hold on, I made the assumption that the ballast was ok. If it is not, then the 12v jumper wire may not feed back to the ECU power-up pin. So the whole entire test detailed above is null. There are two ways around this; 1) just put a new ballast in there or 2) put another jumper either; across the ballast to tie the two sides together, or put another jumper from the Coil + to the ECU power-up pin.
My apologies.
After you get it sparking; remove all jumpers and try it with the key. If it works, put the coilwire back into the coil, and continue