March 15, 2015

I mentioned the O2-sensor install a couple posts back and here's the actual install. Even though it comes with 6 wire-looms, USB plus, 50 feet of 22 gauge "spaghetti" wire, it turns out to be reasonably simple - if far from straightforward.....

First up was to find a spot to mount for the gauge. Unfortunaltey there are no empty gauge holes (or the like) in the dash and I certianly wouldn't drill any mounting holes in the console - so I went with the supplied tin gauge bezel, tucked next to the kick panel. This spot gives the wiring a straight shot to the sensor mounting location, a bung mounted in the drivers side header collector.

Here's the massive - and daunting looking - wiring look that came with.....looks scary...

But after cutting back all the "optional" bits, we are left with 4 key wires: 12V-switched, ground, tach and dash lights....

                       Here I'm cutting and isolating the unused wires with shrink wrap -

And after all the prep was done, everything on the right went into my "spare wire" collection. The bit on the left gets connected to the gauge, with the USB cable being used for laptop tuning.

To run the 6-pin look from the 02 sensor located in the exhaust runner, I ran a thin piece of welding wire through an unused hole in the firewall and down through the wheel well. Then I taped the wire conenctor to it and carefully pulled it back through.

The exhaust had pre-welded bungs for sensors with bolts in them. Removing them was a cinch -

                        And the sensor, pre-lubed with anti-seize, was installedin the same bung -

Here you can see the wire-end coming from the 02 sensor...

Since this plug will be sujected to the elements, I cut the ends off a long thin parts (I keep everything..) and slid it over the plug, leaving enough to zip-tie at eithher end.

The plug was then tied off to a brake line. I'll fabricate a little splash sheild to further protect both.

Other items I took care of this weekend included the door seals and window opeing rubbers.
New seals are the best.

When putting a car back together I NEVER leave things half-done.
               The ash tray insert - and an underside bracket - where painted prior to re-assembly...

                 Come back for tomorrows mission: Speed Tech suspension parts: tubular control arms.