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ktm841

1j / 2j Ignition Coil amp draw?

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So I am rewiring my whole x8, it has a 1j with stock Ignition Coils.

The circuit will be switched to manually complete the coil circuit. I am trying to find out how many amps all 6 coils will draw.

After doing some research, I have found that calcuting the amps drawn off of an ignition coil is fairly complicated (you have to know dwell, capacitor ratings, peak voltage, resistance changes, etc)... I don't have any of the equipment or knowledge to do that.

I know they are ran through the AM2 30a fuse if you swap into an mx83, obvisouly that fuse is setup for a stock 7m not sure what a jzx has but I do know that the AM2 30a is capable of running everything considering it doesn't blow so.....

Need opinions on this theory. I am using 14.5 volts on this as higher voltage = higher amp draw.

AM2 30a powers:
-Injectors. my stock 1j 350's averaged 13.5ohms = 1 amp x6 = 6amps
-15a EFI fuse = Not sure everything that this powers but fuel pump, o2, and ECU. but its rated 15a so = 15a
-7.5 IGN fuse = +12v ecu, = 7.5a

That gives me 28.5 amps, not much room left for the coils. Obivoulsy the EFI and IGN fuses aren't going to be pulling that much current, so lets say 5 and 10, thats still only 9amps for coils... So based on this theory than can't pull more than 10 amps right?

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Found a rough answer.

First, ohms law does not apply to primary circuit because of capacitors etc.

Second, each coil charges so fast that only 1 coil is drawing current at any one time.

Third I believe the ignitor runs 5v to coil not battery voltage.

Answer: According to a reputable tuner, the coil circuit for our cars will only pull about 6amps max (obvioulsy higher current at highest rpm).

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