you mean a coil pack, the service manuals at autozon etc , have good descriptions in them on how to OHM out a coil pack.
You'd have to describe the components you replaced. Did you use a plug and go all in one distributor or did you replace the coil, distributor, and add an electronic ignition unit? If you "fried" your ignition, it's likely you fried something else along the line too. Check all your components.
Check the ignition coil or the "pick up" located inside the distributor
From what I can find out it seems to be located inside the distributor. You must remove the distributor cap to see it. For pictures check the link.
you need to first check to see if your mallory unite is getting power, if it is you need to check and see if your unit is getting a signal from the distributor and if its not you may need check some wiring connections.
Check the pickup inside the distributor and see if its OK. Do you have spark at the ignition coil? Check the wires. Or the cap and rotor assy.
Check the ignition module in the distributor.
check your distributor cap and rotor, check the coil, check the wires, check fuses for ignition.
Check the ignition control module.
The main components to check are the battery, coil, the distributor, its cap and rotor and the associated wires from the coil to the distributor and from the distributor to the spark plugs. Distributor is on the front right side.
check the ignition modulator under the distributor cap
Check the operation and alignment of the stop light switch
Check the BMW for ignition fire. Check the coil pack. Check the distributor or crank sensor depending on the year of the car.