battery keeps draining

i have a 1500 mk1 thats converted to a g60, since the conversion the battery keeps draining if i keep it connected overnight, so i thought i would check to see what was causing it, i connected the multimeter on amps between the  negative battery lead and to the chassis, then i proceeded to remove each fuse to find if any was drawing more than 0.01 amps, non   ,
then i removed the fusebox and it went upto 0.07 :dontknow:  also in doing this i noticed a white and lilac wire that had been getting very hot that came from the white plug ( 2nd in from left and 2 down in pic)
does anybody know what this wire is for and could it be draining the battery

cheers

 

Think it goes to negative on coil