Not getting 12 volts to coil

Yes, Q2 went to 0 on start under the steering column. Here are some results with your lights on to draw some current at the splice under the dasht:
R6 at Batt on alternator to splice had 1.7 volt loss one time and .7 another. ??
Red wire under column connector 11.6 volts with ground to body.
Red wire at bulkhead (with insulation puncture) had 11.58 volts with ground to body.
Red wire under column connected to + battery had .89 drop.
Red wire (# 16) at bulkhead connected to + battery had .14 drop.
fusible link had .57 loss with lights off and voltmeter to + battery and .27 with lights on.
I don't understand how the voltage readings to gound were so close before bulkhead and after bulkhead, yet the voltage drop differences were so high. Should the horn be loud?