Find #1 Plug

I am working on my motor and have the schematic for the spark plug wires to the distributor. The problem is that #1 should be facing the front of the engine but the distributor is advanced. The problem is that I don't know if I am looking at #2 or #1.

Now I know going to the #1 cylinder and rotating the engine until TDC the rotor should point the direction of where the spark plug wire should go on the distributor and that should be #1. Is there another way to find #1 on the cap? How many plugs are there in relation to the vacuum advance?