you want ".84 output voltage at "C"." when you back probe enough to get a sold contact and reading..847 not running and 880 running
With the engine off, what is the ohms resistance from the ground on the flat plug to the negative battery post? 7.2 ohms
With the engine running, and the TPS connected, what is voltage from the ground on the flat plug to the negative battery post?.084
Engine running, disconnect the TPS. Does the engine idle return to normal? no change still have high idle
1) Get the 7.2 ohms down to 1.0 or less by running a ground from the flat connector wire harness side, to the battery negative post.
Then if the idle voltage is not .84, adjust the TPS to read .84
I have not looked up the .84 value, did it come from Cruiser? IF so, use it. I don't recall the spec.
.084 on the ground wire to battery negative post, engine running is nearly .10 Volts on the TPS at idle. It should be way lower. It is consistent with the other 2 high readings you gave me here.
.01 to .02 volts change on the TPS idle voltage is nearly 100 rpm increase as I recall from tests years ago.
The last issue is the no change in the idle with the TPS disconnected. 99.9% of the time, in my experience that is vacuum leak. Other times it might be a stuck IAC, but most of the time the IAC and throttle body have been worked on cleaned already!!!
Vacuum leaks can be a pain to find. Also they can be at the oring seal to the fuel injectors in the intake manifold, or bolts at the intake-exhaust manifold clamps. There is a tone of vacuum hose all over the place you might have damaged or overlooked. You said some of the harness was burned, what about the vac hoses?
With the TPS disconnected, turn the engine off and restart it. Does the normal idle return?