Engine is "99 Volvo 5.0 GL PBYC, BID ignition, bought new coil from Volvo dealer, coil has no internal resistance, was told by dealer with ignition key on, I should have 12 volts at + coil terminal and ground to block, getting 9.30- 9.45 volts. Battery at 12.30 volts, Coil primary and secondary...