Nss harness location?

[v8only]

I have installed a drivetrain in an 85 vic, but cant find the harness that plugs into the vss and nss...anyone know where this harness originatea under the hood?

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[purplebomb302]

Behind the engine block on the passenger side around the trans dipstick.

[purplebomb302]

I got this from my '84 EVTM. It should be the same for '85.

[v8only]

Thx.. i have no harness at all, nor so i see connectors...any idea of what the harness plugs into? Does it plug into the engine bay harness, or the main ecu harness? Im running an 87 sefi comouter harness, but even with the old harness i still didnt see this

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[v8only]

Do u have the pic of the other end in the engine bay?

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[sly]

neutral safety switch on the trans probably.

[85crownHPP]

Did you install a different transmission too? How much of that wire harness to you have? You should have an ECM harness connector or two empty in the trans dipstick area, it was round and 4-wires for mine. The one for the 85 is going to be rectangle shaped. This connection brings 'crank' and backup light signal from the body and into the trans harness, then backup light signal back out to body and 'crank' back into the new ECM harness. In the 85's original wiring 'crank' goes back to body wiring but this is easy to swap over. One of the last posts in my conversion thread goes over this pretty well.
There's a chance you're missing part of the wiring harness - I seem to remember there being another short sub-harness joining the O2 sensor wiring into the rest. In SEFI cars the O2 sensor heater circuit comes in from the body wiring in that connector with the backup/nss wires. Do you have connectors for the o2 sensors? if not, this might be whats up.

Here's a pic of the jumper harness i made to merge the two together. Its the short loom with blue tape on each end, square end is the body end, round is where it goes into the SEFI wiring (mine is 90-91 wiring)
And actually, looking at the pic, I see a big black connector in the background dead center - to you have that plug in that area? I want to say that's where that sub-harness I mentioned plugs in and then goes to o2/nss/vss wiring.

[v8only]

I have no empty plugs at all in that area...i do have the new sefi o2 harness connected, (87 donor) but the o2 has no extra plugs coming off it...i have no length of harness at all...im gonna attach a couple of pics....could it be the rectangular grey plug from the second picture that my thumb is on?

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[v8only]

I believe it is that grey rectangular plug near the main harness connector...i twisted the white wire with the red light blue wire which "should" be the nss wires...hopefully thatll allow it to crank..ill report back later

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[v8only]

Wont crank..cant find beginning of harness idk

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[v8only]

Found it buried...its a square brown plug buried on the body harness along the pass side firewall..jumped it, it cranks now...on the 86-88 cars or so its that small grey plug near the ecu at the firewall that goes back along the computer harness, then down...later cars 89+ its that fat black connector shown in his pic above, and part of the o2 harness...took a trip to the junkyard today

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