I am cleaning up the dash wiring harness after cleaning all the grounds.
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I have numerous print-outs from here, the Samba and other websites of suggestions of what to do with the yellow wire coming from instrument panel at T14/12...ground it somehow. The other end can be connected to the OXS light in pre '89 vanagons have an OXS light.
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What isn't clear is what to do with this end in 1988-1991 vanagons? This cut end runs to the red fuse panel connector in post '88 vans.
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It was just dangling free in Freedom. Is this okay or is there a better use?
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Duncan
"Freedom van Go"
3.3L 1989 Westy

DIY success.

New sensor in. Successful test drive trying to recreate the short and could not make it happen. Engine was hot and plenty of bumps.?

thanks to everyone for chiming in. Appreciate the help!

??????? A correction >> Looks like maybe the Dakota Digital SGI-100BT is what will work in place of SGI-5 ~~

???????????????????? Hey AG

???????? I'd start by making sure ECU has accurate info,,, My VDubaru is a 90 2wd Westy with 01EJ25 & the VSS is in the Speedo

which without help provides incorrect speed info to the ECU,,, Back in 2011 I installed a Dakota Digital SGI5 to correct that & I

suggest that You might want to give that a try,,, The SGI5 doesn't seem to be available anymore but Dak'Digi' has an STA-1000

which appears to be a more sophisticated modern tech replacement ~

??????? Another thing You might want to look into is if Your ECU can be switched to Manual,,, My 01 ECU can do that via a jumper,,,

Not sure if that would help but might be worth a shot ~ I actually keep mine in AT mode 'cause I like the extra 75RPM it provides

@ Idle which helps to keep the OilPressure up several PSI ~

Don't forget wiring to the O2 sensors. Wiring diagram here:https://www.subaruforester.org/threads/2004-p0032-replaced-o2-sensor-with-new-oem-solved.813119/
Interesting YouTube video: Disconnect positive lead from battery and connect wire end of 12v test light to + on battery. Connect other end of test light to wire circuit in question. If light goes on you have a short to ground.

Just ordered a 10 pack of fuse holders. I've unwrapped and traced the wires coming off the relay and have not seen anything alarming.?

Now I wonder if, instead of inline fuse holders, I should install a fuse box under the bench and rewire the various components through it back to the relay. That way I won't have to have inline fuses poking out of various spots of the harness...

Visually inspect your O2 sensor subharness and engine subharness and main engine connectors?

Good to know!
Anybody have info on pressure plates?

Downstream fuse each of the ignition relay battery power suppy wires - they go to the ECU + other circuits to the engine for injectors,solenoids etc. to see if one blows?

I like the idea of downstream fuses to isolate faults. I did that with the fuel pump circuit - after I had replaced the pump and relay. Now the only place this circuit goes after the fuse is the OBD2 port, the ECU, and the main relay, which has been replaced as part of the troubleshooting/part swapping/stabbing in the dark process I'm going through.

I have been led to believe - and please correct me if I am wrong - that what is causing the fuse to blow is downstream of the fuse. This would eliminate the alternator (even though I replaced that also), the starter (I have checked the connections and everything is solid), and the battery as well as any circuits powered directly from the battery up under the dash.

I have pulled the harness out of the van. Now that it's done I sort of regret it, but my thinking was that I needed to follow that wire from the fuse to all it's ends. That is done and nothing was loose or bare or concerning. I guess I am now leaning toward finding a replacement ECU from another 28 yr old subaru.

Try to replicate the issue at home to diagnose. Get the engine hot, start moving the harness or car and see if the fuse blows. It might help narrow down source of short.? ?

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Tried this last week and no luck with shaking the harness or banging on the ECU and OBD2 port.

Have you installed the new alternator? When the engine is hot, if you connect the two green test connectors and turn the key to ON and let everything cycle for a while,does the fuse blow? Check the starter and alt connections and the wiring from alt to black box post. ?

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Alternator is in. Wish I would have tried your suggestion before pulling the harness! I'll do that when I put it all back in and see.

Sorry Sommay.? You crashed an existing thread to ask your question.
I'll delete your post.
Although I question the validity of your question (you'll get a thousand answers, all with the replying parties opinions) I would urge you to post the question in a new thread/topic.
But here's some decent advice.....head out to any of the online sources that list vanagons for sale and do your own research.? Most will clearly indicate that they have converted to Subaru power.
Best,
Brent