I cant sem to wire it to 4 ohms because the terminals are right next to each other and i have no clue which 1 is which voice coil?

Ok its easy. The hot on one voice coil and ground on the other. The take a jump wire and run it from the hot your not useing too the neg your not useing. 2ohm sub wired too 4ohm

To check voice coil terminals,Try use a single 1.5v dry cell connected with short length of wire. Connect one end to speaker and scratch the other end other terminal. If it sounds,bingo! you can also determind the correct polarity. If the cone move forward, then its +

This sub has dual 2 ohm voice coils. If you wire the two together, it will be bridged down to 1 ohm. I could be wrong, but I don;t think you can wire this sub in a 4 ohm config. I took a look at the specs via another website. I know you can wire the sub @ 2 ohms by reversing the polarity.

Test with a digital multimeter set to ohms. if you don't have one of those laying around grab a 9 volt battery and run wires from the 2 terminals on the battery to 2 of the terminals on the woofer. if the woofer pops out you are said to be "in phase" (even though it has more to do with polarity that phasing but regardless) which means the positive from the battery is on the positive of the woofer and the negative is to the negative. those 2 terminals on the woofer are a single coil and obviously the other 2 terminals are the 2nd coil. now depending on what impedance each coil is will determine how you have to wire it to be 4 ohms unless they are 4 ohm coils which means you just use one coil and it will be 4 ohms on that woofer.