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It actually means the opposite. Not that it applies to the OP now that he's fessed up.

Kinda. Still not 100% but close enough. And I'm not even talking about vacuum "pulling" stuff open. Wtf is up with that?

Implies a mech gage.

If that were me I'd be spending less time studying tint laws and more on 42 U.S.C. 1983...

We all make mistakes but it's annoying to see misinformation posted with authority. Smacks of Dunning-Kruger. Tech info should be accurate. One reason it's called tech info.

Crack me up. Nope. Guess again. Lots of fail in this thread...

^ You be welcome Mon. Meh, it's just the internet. Besides, I was a bit hard on you. Sorry 'bout that...

Someone did. Used colored LEDs in a bar graph configuration. Cheap to make too. They were popular in the community around 10-12 years ago.

It's part of the idle speed control strategy. What make the stock sender unique though is the pulsating nature of its signal.

Very similar in what way? As 3p pointed out the stock sender is unique. It's designed to work with not only the stock gage (itself unique) but also the TCCS.

We were talking idle but the truth is the engine can be run lean all the way up to 75% power. By lean I mean around 150-200 degrees on the lean side of peak EGT. It'll run cooler, cleaner, and with better fuel economy. Not so good for emissions though.

Bit lean at idle is fine. I actually prefer it. And just to clarify as long as part throttle operation is steady state the ratio will always be stoichiometric.

Or it could be like the ones on my gun vault and garage side door...both of which operate near flawlessly.

If changing it didn't help what makes you think the first ECIU was bad? Is the new engine another GE or a GTE? They control the fuel pump in different ways. MIL on with key? Igniter tested and grounded to the chassis?

I don't explain everything because it'd take too long. I do expect instructions to be followed. You're still making this way too complicated. There's no need for a bulb. All you have to do is use any sender that shows resistance when pressurized. And I wasn't belittling you for lacking...

Two words: load dump

Edit: What he said...

I'm afraid it's not that simple. Expect to see 20 to 50 ohms because of the heater and calibration resistor internal to the sending unit. By "shorted" (shouldn't have used that term) I didn't mean zero resistance. Nor will the sender cycle without power on it.

Then use a transponder, either an aftermarket rig or one from another car. There's all kinds of automotive things that can be grafted onto different cars. I'm fond of using Lexus gadgets. I've also installed MKIII stuff on other cars. A cheaper option is to secret squirrel the button. Works...