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Ears OK, unless you are looking for a specific number, like say when using a PTO, or determining TC stall…

Yep, its right there on PX26 pin 1 and 4. Pin 4 is referenced to ground(tb2) at the truck side of that plug.

I am not putting mine back in:) there is another small module down there, called a “frequency divider” that you can also pull. Small box with about 5 colored leads into a multi pin connector. Its actually an isolation amplifier that allows the magnetic pickup RPM sensor to feed more than one...

Yea thats just the emissions compliance sticker. There should be a smaller sticker below that(front left corner of the valve cover) that has the serial number. It appears to be missing on yours and would be under the shadow of the hand holding the cellphone in the first pic… Mine has that same...

Oh, does the shimmy change if you apply the brakes?

What is the frequency of the shimmy? Big tires turn relatively slowly, about 6 revolutions per second(HZ) at highway speed. I would expect a tire to oscillate about 3HZ at 30MPH... A DS would be 7.8X that... My limit for counting reliably is about 12HZ, so even at 30MPH a DS would be too fast...

I have looked into National. You are correct, national does make hundreds of variations, unfortunately one WITHOUT several inches of suspension under it, is not one of them, No room for that in a LMTV cab, so you are right again, nothing to see here, move along…

Yea that might fit if you strip all the air suspension below the positioner slides off of it:)

A pico scope is a multi-channel analog to digital converter box that connects to a serial port on a laptop. A piece of software accesses the data coming in from the converter. Basically creates an oscilloscope out of a laptop. the only pulsed signals on the A0 STE connector are the flywheel...

The AO STE is very rudimentary. Basically you can read: 24v, gnd and regulator field duty cycle(how hard it is working) from the alt A buffered/isolated flywheel tach signal(133 pulses per rev) from the frequency divider. A 24V battery voltage sample from the PPD A current sample seen by the...

lose traction...

So CTIS cycles and the tires start to deflate? If so, look for an obstruction in the PCU vent line. This line runs from the plastic cover on the bottom of the PCU to a port in the floor. You can disconnect the line at the plastic cover to take that line and floor port out of the equation...

Yes, you simply need a millivolt meter that can read 3 digits right of the decimal(.001). Connect it to the two small screw terminals on the shunt to measure the voltage/potential developed between those terminals anytime current flows thru the large attached cables. Rated to 1000A As wired...

Thankful for the lockers because you can still spin tires?

The item you are pointing to in the first picture is called an instrument shunt. It is a high current precision resistor. By reading the voltage developed across the resistor/shunt at the small terminals with a dc voltmeter(millivolt meter), you can accurately measure the current being pulled...

Yea its usually the cab down to trans harness where the insulation transforms to crayola crayon... inside the cab seems a little unusual...

Yea if you are pulling them for lockers anyway, its a better mix...

What general said, 3.9 is closer to ideal, but if you watch your weight...

Yea, probably rear shoes fused to drums. any transmission codes? Press both arrows together to enter diag mode. display will show D1 and 2 sets of numbers if any codes are stored or - - if no codes are stored. Press mode to step thru memory locations D1-D5. Press both arrows to exit or turn...

well being stumped is how you learn things…:) in this case, having been stumped by alternators a time or three, I may have an answer for you. Alternators don't make full output until they reach full RPM. I will have to look at the pully sizes again, but at lower engine RPM you are probably...