wiring a voltage regulator

You have to be sure of several basic points

1---That the point you hook the regulator blue (and the second field connection) to is ACTUALLY close to battery voltage because this is not only power for the regulator, but your "voltage sense."

So to check that, with "things" hooked up as per normal/ ready to run, turn your key to "run" but with engine off. Hook one probe of your meter directly to battery positive, and the other to a point as close as you can get to the regulator IGN (blue) connection, IE your coil + with no ballast

What you are doing here is directly measuring the voltage drop between the battery, all the harness/ connectors/ switch/ etc to the regulator. If you have the second field hooked to the same point as the regulator blue wire, hook up to the blue field connection. Make sure everything is hooked up, as you want the "normal" load on this circuit.

You are hoping for a very low voltage, the lower the better. Over .2V (two tenths of one volt) means you have a bad connection or bad switch somewhere.

2---Make sure the second alternator field terminal is also hooked to switched 12V

3---Make ABSOLUTELY sure that the regulator is actually grounded. You can operationally check this once you get the system running. To do that (after you find/ fix the problem) run the engine at "medium cruise" RPM, and run this check with NO loads turned on, and again with as much "stuff" as you can bring online, IE lights, heater, etc.

Hook one probe of your meter directly to the battery NEG post, and the other probe to the CASE of the regulator. Be sure to stab through any rust, chrome, etc.

Once again, you are hoping for a very low voltage, the lower the better. Zero is perfect, and once again, over .2V means you have a ground problem.

Your battery up front or in the trunk? Make SURE the block, the body, and the battery NEG are all securely grounded. On a front--mount battery, which is grounded to the block, I like to run a 1 ft starter (ring to ring) cable from a bolt on the rear of the driver side head over to the firewall, master cylinder bolt, etc.

Install star washers under the regulator mount bolts, they must be tight and not stripped. Scrape the firewall clean around the mount.

Pull your regulator connector and inspect the pins of the regulator and inside the connector. Push on/ off the connector to scrub the terminals clean and to check for tightness

4---Where are you checking this 35 volts? At the alternator output? It might just be that the alternator is NOT actually connected to the battery. Not knowing the details of your harness, how it's wired, or what might have happened, it might have a mis-wiring problem, a popped fuse link, etc.

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I didn't bother to check, is the documentation for these harnesses online, and if so can you post a link?