OK, that corresponds with what I've always been told RE: ballast resistors -- they are there for ignition module's benefit, not coil's. Before electronic ignition (breaker points) were no resistors and system ran full 12v. After electronic ignition voltage lowered to ~10v. BTW: high performance MSD/Pertronix/Mallory modules go back to 12v. Just dropped my Pertronix in too. Works like a charm, eh? Bill Robertson #5939 >--- In dmcnews@xxxxxxxxxxxxxxx, kayoong@xxxx wrote: > Mr. Bill Robertson: > > Nope ... I just removed the old original Bosch coil and dropped in the MSD > coil, so the factory ballast resistor is not by passed. > > Yes, I am still using the factory ignition module, for there is no need > change it. > > No, I do not know the voltage into the coil. I have not have the need to > measure the input voltage, for I feel I need not be concern with it. Since it > is only the coil I am replacing are R&R. I had consulted with the retail > salesman about the MSD application in the PVR motor and the coil is a "simple" > replacement which it was .... 20 minutes from start to finish including removal > of the cover. I must say, it was the simplest, easy and the cleanest task. > > FYI.... I have no troubles with the ignition system. I do a complete cap, > rotor, spark plugs and wires changes every Spring time -- Religiously! Do > keep in mine I do drive my DeLorean daily in the New York City traffic and in > the Northern New England area, in the hot and cold weather including heavy rain > and in the snow. My engine kicks over within two to four turns with no > problems at all in any temperature and weather conditions. My DeLorean has over > 102,000 miles and still counting with the MSD logging on over 35,000 of it. > And yes, there is a difference in the coils performance, I can redline the > tach in 1st, 2nd, 3rd and 4th gear, but not the 5th. So.... > > Kayo Ong > #5508 > Lic 9D NY