got old points out and they seem to be melted a little got new points and run pos wire from fuses and seem to short and wire gets hot

There should be a resistor or resistor wire in the circuit to step down the voltage from 12 to 14 volts to 6 to 8 volts. Running it too long that way will also burn up the ignition coil. HTH. - Jim

I hope you aren't running a hot wire through the points, the points are a condensing ground circuit, you can burn out points and condenser that way. The only hot wire is on the ignition coil and it will have gone through a ballast resistor so it is not battery voltage.

no havent run it. the wire coming from celiniod to coil is how maney volts? cuz i have no power going to coil? and no resister between thats what melted the old points. got car like thisand would love to drive it one day thanks for your help

Since you have no power to the coil, check for power at the ignition switch. If you have power to the ignition switch but none coming out, ignition switch is bad. If you have power coming out of the ignition switch but it gets lost going to the coil, the wire going from the ignition switch to the coil is bad. If you have no power at the ignition switch check the wiring down by the starter. There may be a burned out fuseable link there. HTH. - Jim

Look at this:

i have negative earth on my 77 mg. this is showing positive earth?

So it has been converted but the wiring should still be the same.