hi, i have a problem that i have no spark on my escort rs turbo, last night it failed to start, there was no spark, then all of a sudden the spark came back, then today the same, it started up fine , then it lost its spark, i have 12v going into the + coil and coming out the - on the coil , but nothing coming out of the ht lead, on the dizzy 3 spade plug connector i have 12v on the first, 5v on the second and 0.1 on the 3rd spade... ive changed the dizy cap and rotor arm but to no success..... please help!!!!!!!! im stuck?????