Just for the record, if you are running dual coils in parallel (both coils sharing the center post), you need some more larnin' in Ohm's law. Resistances in parallel add like this 1/(1/r + 1/r). In the case of dual parallel coils of 1.6 Ohm, you get 0.8 Ohm.
Just reiterating so you will be safe.
Also, I guess I should simplify, the above is the general case: if you have three coils sharing a center post then the total resistance is 1/(1/r + 1/r + 1/r), r being the value of the resistance (Ohms). And so on and so forth (four 1/r's for quad coils, etc.).
But for a dual-coil parallel, you can just divide the resistance of one coil by 2, tri-coil by 3, etc. Assuming the resistance value of each coil is equal or roughly so.
Figure a lot of people are allergic to math, so why push them away with it.