WOOOHOOOOO..........it worksssssssssss
ok now this is what i did ,found the power wire to the coil in my case ,black with a red trace .
back of the standard tacho loop wire male spade to the black with red trace then the female plug of the tacho to the pos side of the coil and yeehaw it be working sweet .
many thanks guys i couldnt have done it without your help .
john