HAILERS

Here's the TURBO schematic. Note the lack of the X-15 plug and the Blue coloring indicating ENGINE harness wires. Again, the lack of a alternator plug is not a biggy. It's the BOOST SENSORS output wire going to a 12vdc METER fuse that would bother me.

BigMike85

ok then. what will happen with me clipping the BrR wire and taping it? Since the boost sensor output will obviously not go anywhere? ( in either case) and will my fuel cut defenser not function then?

HAILERS

I don't have series five diagrams. I don't think so. This has nothing at all to do with instrument clusters.

Personally I'd have left the non turbo harness in the car and worked off it. Even if I did put a turbo EMISSIONS harness in the non turbo, it's not that big a deal to remove one brown/red wire from the X-15 plug and tie it back. Hell, I'd even cut it and tie it back if I couldn't depin it.

But by all rights, your water temp gauge should not be working with that turbo harness in there. I would have depinned it (yellow/white) from the X-15 and put it in to the X- 16 plug where it would work.

I'd a done this with the harness out of the car though. Easier.

There's other changes to make on that harness but IF I remember right, they are not worth doing or insignificant.

I've no clue why anybody would change instrument (Combination Meter) clusters. The Boost Sensor is a known faulty part and you lose your VOLTAGE GAUGE if you do. Makes no sense what's so ever.

BigMike85

So I should change out the pin from x15 to x16 for it to work? Im getting an aftermarket water temp gauge before I go driving anyway so I might just disconnect it permanently. And is it safe to assume that the black wire in my first post is a ground?

HAILERS

Sounds reasonable to me. Just make sure you clip the brown/red wire at the X-15 and not the X-16 plug. And definetly NOT at the boost sensor plug.

The Brown/Red wire leaves the boost sensor and branches off. One branch to the X-15 and on to the boost GAUGE.

The other branch goes to X-16 plug and then on to the ECU. The ECU Must see that output of the Boost sensor.

Count the pins/sockets on the X-15 and the X-16 shown in the jpgs above. That way when you go to cut, you'll KNOW that you have the right plug. Cut the wire at least three to four inches back from the connector. Put something over the open end. Even a glob of RTV if you have to.

fcfdfan

Hailers, you da man.

BigMike85

I agree!!

HAILERS

Oh. The Black wire with the SHIELD around it in the second picture. That is PROBABLY for the 02 sensor.

There is another wire similar to this that goes to the KNOCK SENSOR located on the sparkplug side of the engine. Sitting here, if I remember right the KNOCK SENSOR is screwed into the intermediate housing . It has one wire and that wire connects to a wire similar to the one in your picture. But it's located on the other side of the engine. The one you show is 02 sensor I THINK. Pretty sure.

Here's a question. Do you have POWER STEERING. Say NO, please. IF you DO NOT, then the water temp sender wire can be made to work sorta easily.

What the deal is, is that if you DON'T have power steering, you can run that Yellow/White wire from the water temp sensor to where a power steering relay is in a car WITH power steering, and connect that yellow/white wire to the plug of the relay. You'd put it in the socket with a Lg/B (light green/black) wire.

That power steering relays location is in front of the radiator with those other relays. If your car has NO power steering, then the relay is not there, but there WILL BE a plug for a relay and that plug will be tied back somewhere in that area. The FOUR wires in that relay plug are, Lg/B.........two BLACK ......and Lg.

HAILERS

Not to drag this out, but just in case: look at the jpg of the X-15 plug in the posts above somewhere. Notice how the top plug is part of the FRONT harness and note that the bottom plug is from the EMISSIONS harness. So they mate together. When they mate together the end of the EMISSIONS plug with the LW and L wires on the right end, will mate with the LW and L on the left end of the FRONT harness. Just in case you missed that.

And remember the wire colors with the ( ) around them on the EMISSIONS plug, will now mate with the wires on the FRONT harness that DO NOT have the ( ) around them. That's because your FRONT plug is the original non turbo plug/harness.

You need a fsm wiring diagram to figue out what each wire color is in that picture.

On the whole your ok as far as the engine running IF the Br/R wire is snipped AT the EMISSIONS plug. Preferably a couple of inches from the plug so you can reattach it later if you need to.

The X-16 has issues also. The LgB comes from the pwr steering relays plug that I mentioned above. IF the Yellow/White wire is installed into the relays plug where the LgB wire is, then the water temp gauge is sure to work.

Frankly I have not figured out the (W) and the (Lg) wires in that plug yet. IF they are important I'll let you know. Later.

HAILERS

The (W) will be just fine. It's Split Air Solenoid wire and will work as is.

OOOps. The (Lg) is the output of the Knock BOX to the ECU's pin 1R. I don't know if you have the Knock Box or not. It should have come with the turbo emission harness. I ran for over a year without a knock box.

HAILERS

LAST POST ON THIS SUBJECT: This jpg shows why you need to snip the BrR wire at X-15 and nowhere else.