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If we could up vote posts, this would get one.

If you have no power on the small wire until the key is in the crank position, and the starter is hooked up right, then the internal relay to the starter is stuck on. There are no other choices.

A fuse is a "short" by design. It is circuit protection that stops current flow. It doesn't provide a ground path for current flow. No, check for power without the switch in the crank position. There is a reason for this.

First thing, the battery ground should be disconnected when you apply battery power, even though the small wire is switched. Check to see that you have B+ on the black wire with the blue tracer. Unless yours is different color. It should say B+. If it doesn't, post a picture of how you have the...

I can answer that one from here. Zero. If he had refrigerant, it would show a pressure equal to ambient temps.

All I see in your picture is a dirty green connector with wires. If you crimp a wire, use a splice without insulation. Toyota sells them to fit the wires. Fill the crimp with a little solder and shrink wrap it. I myself would buy a new sensor because I am lazy like that.

If your timing is jumping all over, you are not in diagnostic mode. It is possible the bolt on the CPS is loose, but it usually doesn't bounce around when it is. The 7MGE provides the correct pick up signals, they are the same. But I am not seeing it, meaning your intention. I can't see all that...

Yep. It is Toyoda (toy-oh-duh) because the owner thought spelling it phonetically to english was bad luck. As stated above.

Nah. Waiting until the bubble bursts is when you buy. That is the good part about economic depressions like we are in.

Dissimilar metals, iron block and aluminum head are two of the three things needed for a battery. Factory over priced red coolant was made specifically to combat the third.

I am not picking on you, I haven't seen a need for it. I just wanted to repeat this for millennials.

That depends on the condition of your motor, as well as the turbo. As for bolt-on, I have the Boss Jr from Suprasport/Comp Turbo. It is no longer available. You could get a Boss Sr, and just be mindful of your compressor size and turbine for quick response.

I don't think that is possible That only shows up if you crank the engine. Without the STA signal of course.

This is where you make fun of somebody on the internet. I will pass this time.

Did you tell them what you told us?

Sometimes you can look at the back of the combination meter and see people do stupid things.

I just realized there was missing information in the OP. Does the car crank when you put the key in the start position? The computer does supply power and the ground is constant. It is doing it for a reason. My comment is not related to bad wiring and aftermarket, which could be why the crank...

B+ terminal? Have you looked at the Toyota EWD? I assume you mean the PCM, and not the DLC.

That is your clue. http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=BE&P=85 That is the repair manual, not the EWD. However, the repair manual has the schematic also. I know that most of it is checking to see why it doesn't turn on.

Buy it on the internet if the local dealer sucks that bad.