Wiring Problem

Buckeyeboy said

Thanks so much for helping me!
Nothing is attached to the starter relay.
I rechecked the blue wire with the white tracer at the ignition switch and got .3 then got .35 at the inside bulkhead same blue wire with white tracer. I'm not sure why it's different than the .47 and .53 I got last time.
With the key in run bat + to vr blue I got .45
Engine running at 1,500 no load I get 0 from bat - to vr case
Engine running at 1,500 with headlights, radio and heater I get .01
I replaced the five year old battery with a new one and nothing changed.
I also forgot that the previous owner wired a choke to the hot wire coming off the radio.

Click to expand...

It is starting to sound like you need a regulator which would be rare

The reason the batt---to ign blue changes is because any small "wiggle" in a ?? terminal OR THE ignition switch contacts themselves will change that drop. IE set up the voltmeter, and try "gently" wiggling the key while in "run." I bet the reading changes.

OTHER THINGS that change that reading:

Changes in LOAD on that circuit. "If you have" a choke heater, and the timer trips off, if you have break points ignition and the points are open vs closed, or the alternator brushes may be in a "poor" or "good" spot and drawing less or more field current.. In other words anything fed by the ignition switch "run" contacts that could change current draw.