u/MetalOnReddit

Now it's a roach detector

Hey! Having an issue with the tail light wiring on the 86 Squarebody Suburban I have.

I figured I'd see a dark green wire going to the Right brake light. What comes through the grommet is a series of black wires. There's a green one that goes to the Reverse light however.

With the light switch left Off, this light will illuminate at half brightness when I press the Brakes. Of course, the Left Turn+Brake light illuminates at full brightness.

With the light switch pulled out and turned On, this light does not illuminate any further when brakes pressed (I guess it is expected to be receiving 2x voltage)

Pulling Left brake light housing, the expected wires are present vs this diagram I included that I referenced.

Pulling Right brake light housing I have the confusing colors I mentioned. There is a dark green, a black, and yellow wire going into the grommet. Then out of it I have all these other colors but no dark green. The light green goes to Reverse lamps.

We know that:

-Brake switch is functional

-Bulbs are all functional

-Turn signals are functional

-Left (Driver Side) brake light works 100% as intended

-Left side has continuous matching wire colors from wire loom, through grommet.

But,

-The Right Brake Light only illuminates half way total, and doesn't illuminate any further upon pressing the brakes, with the lights switched on

-The dark green wire disappears after passing through that grommet

Just a little confused 😬 thanks!

Context

Kubota b2630, D1105 engine, it's old and barely had any routine maintenance before me. It was ran a long time with a sludgy filter and catch, and had a severely plugged air filter. All fluids were low besides motor oil for the longest time. Anyway

Recently, it started to miss. Not all the time. Then one day I tried to start it and it had a hard time starting.

-Shook out fuel catch and filter (was pretty clean, actually)

-re-primed fuel with bleeder

Got it to start reliably, but I could audibly hear it was only firing on two cylinders.

Cracked bleeder again maybe there's some air. No.

-Replaced the injector that wasn't firing, with brand new injector

Still no fire on that injector (front of engine)

In video, you can see I crack the nut above the 1st, 2nd, and then 3rd suspect injector. First two cause engine to begin to stall.. Third, no difference. Question is, since fuel is squirting out, is the injector to blame? It's new. But I doubt it's an air pocket or something, the injector came primed.

On the list for today is to swap the order and see if the issue moves. Will post updates

Any ideas so far though? What do we think?

Internet tells me if pump had been sucking in low quality fuel with moisture or algae (which there was plenty of in the filter I replaced.... A few months back..) that can wear the pump out.

I am sure in ideal conditions these pumps would last more than 15 years. Definitely far from ideal conditions. I don't think any previous workers had maintaining this machine in their contract. They didn't, either way

Thank you