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Old 05-09-2023, 04:42 PM #1
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ACC / On Ignition source under hood?
I swear I searched and was fiddling around today can could not track one down. But does anyone know of a ACC source I could tap into from the under hood fuse box?

Trying to clean up my wiring mess this month.
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Old 05-09-2023, 06:43 PM #2
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Originally Posted by vegask View Post
I swear I searched and was fiddling around today can could not track one down. But does anyone know of a ACC source I could tap into from the under hood fuse box?



Trying to clean up my wiring mess this month.
How about the after the 7.5a IGN fuse.

Brown red is coming from the key. Or the after the 15a ACC fuse.

Basically, the load size so the fuse is still intact. You can tag either one of those to trigger a relay to power whatever you want.

Others would fuses would be 10amp gauage
20amp wiper
20amp 4wd
10 Amp turn
10 Amp ecu ig

But I rather see you loose accessories then important things ..

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Old 05-10-2023, 01:39 AM #3
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Fog lights; mirror heater; defog; power outlet (unless you did the full time mod).


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Old 05-10-2023, 09:55 AM #4
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Thanks for the input, but I checked last night and all my fuses under the hood were hot with the ignition off (except tail light). Unless you are saying I should tap into a leg of one of the relays?
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Old 05-12-2023, 08:38 PM #5
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Quote:
Originally Posted by vegask View Post
Thanks for the input, but I checked last night and all my fuses under the hood were hot with the ignition off (except tail light). Unless you are saying I should tap into a leg of one of the relays?
That doesn't make sense. The stop is always hot. So mostly is the dome circuit.

All the circuits I mentioned, according to the electrical wiring diagrams, only go bat voltage when the rig ign is on or accessory...

Unless these particular circuits are in the passenger compartment and not under the hood.

Which circuits are listed under the hood? I don't recall without looking?

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Old 05-13-2023, 01:27 AM #6
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Quote:
Originally Posted by brillo_76 View Post
That doesn't make sense. The stop is always hot. So mostly is the dome circuit.

All the circuits I mentioned, according to the electrical wiring diagrams, only go bat voltage when the rig ign is on or accessory...

Unless these particular circuits are in the passenger compartment and not under the hood.

Which circuits are listed under the hood? I don't recall without looking?

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He's right. All the under hood fuses are full time hot, even the headlight fuses. The circuits you mentioned are all in the under dash box.

Pin 2 of the EFI relay under the hood would give you an ignition on trigger. That's the only place I can see. The other relays are triggered by function specific dash controls like heads and the heater. Those dash controls get key switched power from the under dash box. No ACC trigger whatsoever forward of the firewall.
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Old 05-13-2023, 10:37 AM #7
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That explains it. I figured that had to be the case when he came back saying they all are hot. Why they don't put all the fuses in one spot must have to do with wiring costs. It's cheaper to put sub panels in, then run the wires longer..



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7 3rd gens listed in the build thread (2 are parts mobiles)
Build Thread: https://www.toyota-4runner.org/3rd-g...os-builds.html
Brillo's Bucket Fluid Ex changer: https://www.toyota-4runner.org/3rd-g...ml#post3358086
Sparks Plugs Wire and Coil Information: https://www.toyota-4runner.org/3rd-g...on-5vz-fe.html
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