1990 rs 305 was a tbi switched to carb the problem I'm having is I was pulling the ecm out and cleaning up the wiring because previous owner had the wiring all hacked up when I got to the drivers side harness I found cut and loose wires my main problem is the cluster with the key on headlights/running lights off the dash lights are on at least half of them with the headlights/running lights on the dash lights go out and the only gauge that reads good is the voltage gauge oil barley moves and fuel stays on empty and bounces up a little when driving other then that nothing turn signal lights work and dim the rest when blinking other then that all other electrical works fine idk if I bumped a wire or pulled one loose any help or feed back is greatly appreciated

 

I can't even follow what you are trying to say without proper punctuation.

 

I can't understand any of that either. But the photos tell a fairly complete story.

First off, I would NEVER have bought a car with wiring hacked up that bad. If that level of sodomy had been applied to, say, the engine (probably has) or the body or the brakes, it might be more obvious. If the carb conversion was done with a similar level of professional attention to detail (probably was) I'd be afraid to get inside it, especially when it's running (probably doesn't, at least not right) for fear of it catching fire. As it is, you are now the proud victim of the stupidity of the lowest form of human garbage, and you even paid for the privilege. Hard lesson to learn.

First remedy I would employ is to untwist all those twisted up wires, and splice them back together PROPERLY to their ACTUAL other half. Kind of a no-brainer here: blue to blue, orange to orange, etc. That means, solder and heatshrink, NOT crimp splices. With the mess you have there, there's not even ANY POINT in trying to troubleshoot ANYTHING yet; any wire might be connected to any other wire (and probably is), which can of course cause all manner of unpredictable behavior. Nobody out here is going to tell you, your gauge does this when you turn the headlights on, that means the PO must have twisted the dark green wire and the purple wire together. "Internet fix my car for me NOW" can only take you jsut so far. At some point you have to use some common sense. Which undoing all that buggery and involuntary carnal knowledge would be an obvious place to start.

Next thing I would do is locate the FSM for the car, so you can see what each wire is/was and where it goes/went. Makes it AHELLUVALOT eeeeeeezyer to work on it if, say, the tail lights don't work, and you go to the wires that are supposed to be tail light wires, and see what's wrong. MUCH less trouble than looking at a handful of COPPER WOOL and trying to figure things like that out.

Some people in this world simply should not be allowed to own a pair of dykes. They should be locked up in a federal pound-me-in-the-a$$ prison FOR LIFE if caught with them.

 

Thanks for the reply ill keep digging into diagrams to try and figure out what wires go where but starting to look like im just going to have to buy and new harness and start from there

 

That's what I would do in your shoes. Sure beats working under the dash for the next 6 months and frustration of trying to figure out how things are and how it should be.

 

I can NOT get over how little of the English Language (as a Subject for English speaking children), is taught to our Youth.
Somewhere around the Year 1990, things changed in regard to how English was being taught..
Now Children are not educated the way that we were.

Hand-writing, spelling, sentence structure, punctuation, capitalization, grammar, Etc...
These are not components of English, that are deemed important enough to learn.
Dictionaries and Thesauruses are replaced by the Keyboard (of our Computers).
None of which needs to be taught today. Computers will take care of it all; until it doesn't!

Since the Internet does not exactly represent a "Pillar of Excellence" (regarding the Subject of the English Language)...
I felt making less changes to the OPs Post, would better demonstrate my point.

Revised OP's Post:

"I have a 1990 rs 305...
Which was originally TBI, but later switched to carb...
The problem I'm having, appears as intermittent IPC operation/ illumination.

While I was pulling the ECM out, and cleaning up some of the previous owner's hacked up wiring...
I got to the drivers side harness,and found cut and loose wires.

My main problems are:
-with the key on, headlights/ running lights off, at least half of the dash lights are on.
-with the headlights/ running lights on, the dash lights go out...
in addition, only the volt gauge operates. The oil pressure gauge moves slightly, and the fuel level gauge shows empty.
-The turn signal lights work, but dim the rest of the lights when blinking.

Other then what I typed above, all other electrical works fine.

Idk if I bumped a wire or pulled one loose.
Any help or feed back is greatly appreciated."

So with only some punctuation, capitalization, sentence structure...
removing some words/ adding some words and simply moving some words around...
There is some decent improvement (not that my English is particularly exceptional).

 

If i recall the Stock Gauge operation...
With the Ignition ON (engine OFF), I believe the Fuel and Oil Gauges just read zero (meaning that they do not recall/ retain memory from the Engine last running).

 

For the 1/2 dash lights that aren't on, I'd make sure the bulbs are good.

I'd look at the switch and dimmer for the dash lights going out with the headlights coming on.

I'd check/replace all the dual filament bulbs and sockets that have a running light and signal in one bulb, it sounds like the signal circuit is back feeding the running light circuit.

A side note, don't be surprised if the wiring isn't as bad as it might seem at first, who ever did what they did were probably doing the bare minimum to get by, meaning a lot of the correct stuff is probably still there and just needs fixed properly.