Charging issues?

OK here goes. 74 Dart, strip only. Battery in trunk, two pole kill switch, elec. fuel pump, elec fan. When I first got the car two years ago, the battery kept going dead. The kill switch also wouldn't kill the engine. I have since replaced the battery, voltage regulator, and alternator. I used a bosch relay to kill one of the field wires to the alt. so the main kill switch will shut the engine off. I also have bypassed the amp gauge and bulkhead properly. The P.O. has done quite a hack job of the original wiring. The problem I'm having now is that I'm only getting 12.3 volts from the bat. lug on the back of the alt. Raising the rpm's doesn't increase the voltage at all. I'm wondering if the relay is having an affect on charging. When I put the relay in, I wasn't sure which wire to put it on. When I put it on the yellow wire it didn't kill the engine. I put it on the purple wire and the kill switch shut the engine off. There are so many splices in the original wiring, I'm thinking about yanking it all out and starting over. Any thoughts?
Author: admin