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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

BW wires from/to Igniter and Coil

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Old Sep 15, 2023 | 02:30 AM
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BW wires from/to Igniter and Coil

Well I am newbie here not sure where to pist my issue, so trying here. Got an 1995 ATM 3.0 V6 3VZE 4runner. Found a short circuit on injectors harnesses solved and after that there's no more sparks from coil to distributor and so on. Trying to figure out what's happened I've found a picture showing the wires that go to Igniter and coil, but looking at my harnesses I don't see where those BW wires come from, they seemed to be attached to others wires outside the entire harness itself, got lost. Exposed all wires in the harness trying to reach or find them cut somewhere, nope. Can someone please tell where those come from?
Thanks in advance
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Old Sep 15, 2023 | 03:06 AM
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BW wires

Hi there. I really would like to know where those BW wires come from. Any help?

Thanks in advance

Need to know where those BW wires come from
coz I don't see them in the engine harness, maybe some curious have cut them somewhere
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Old Sep 15, 2023 | 03:54 AM
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Messing up

Can you see the mess I've been through?



There are 3 positive wires soldered togheter, a real mess
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Old Sep 15, 2023 | 01:44 PM
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My EWD shows the B-W wire just connecting the igniter to the coil.
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Old Sep 15, 2023 | 10:44 PM
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Bw

Thank you scope. But your pic shows they're coming from inside the harness 1 to coil and 1 to igniter, my thought is they must be ground wires, but where are they grounded to?
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Old Sep 16, 2023 | 05:21 AM
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As I said in https://www.yotatech.com/forums/f116...gniter-287857/ the igniter is grounded through the case. The coil isn't grounded. I didn't take the harness apart, but I don't find anything hard to understand about a B-W wire just being connected at the two ends.
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Old Sep 16, 2023 | 05:45 AM
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R

You're right!! But would you please take a look at the pic you've posted in another thread? It shows two wires coming from inside the harnesses and going to coil and Igniter, I'm trying to find out where they're connected from, got it?

See those BW coming from harness? Where are they connected from?
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Old Sep 16, 2023 | 08:31 AM
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I'm not doing a very good job explaining this. The B-W wire in the photo comes from the igniter's connector, through the harness (like all wires), and ends at the coil's connector. It's one piece of wire.

Is it possible there's a hidden splice in the harness, with the B-W wire "coming from" another connection? We know it isn't at ground. We know it isn't at battery (12v). We know there is no electrical reason for the B-W wire to connect anywhere else (the IGF wire is what the ECM monitors). And most importantly, Toyota's EWD says it is one wire, with two ends, and goes no where else.

I wonder if you're getting confused by seeing two connectors in one photo? A wire from one connector to the other still goes through the harness, not in some sort of unharnessed straight line.
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Old Sep 17, 2023 | 04:38 AM
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BW wires

I understand your point Scope , I'm not confused about your explanation, thank you, my question is, if they're " one to another" straight wires, why they go or come from inside the harness in your posted photo?
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