Ok mate no probs, your up for it then, try the battery on the correct terminals, you will need to charge it first tho, they do come with some charge in them but it's always best to give them a thorough charge first. if your still not getting any lights or ignition light then you might want to test the earth leads first as old bikes seem to rust there first for some reason, just take the bolts out give them a good clean and see what happens. Don't forget to use a bike charger and not a car battery charger or your nice new battery will become a paper weight. Also see if the kill switch is stuffed (if you have one) that can cause all sorts of grief. Other than that it's a case of rial and error fault finding, try connecting the wires one at a time till you find where it stops working, not a happy place to be I'm afraid as it can be a bit of a grind tracing electrical faults. good luck.