My V8 2004 engine seized up unfortunately when it overheated. It accumulated 350,000 mi so it still had a good life. I am swapping out a used engine from a totaled salvage vehicle and there's only one thing left for me to finally rev my old girl up....

Looking for wiring details for the transmission soleniod harness connector. This is the connector on the outside of the transmission housing that is part of the main wiring harness. Need to reconnect the wires to the connector but have no idea which color wire goes to which pin on the connector. Found a vendor selling a pigtail replacement but still need to figure out the matching OEM wire colors since the replacement wires appear to be all blue.

2004 4Runner 4.7L 4WD with automatic tranmission

Thank you!

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From the electrical manual it looks like J29, J30, J35, or J36. Which are all one connector.

The part number for that is:
90980-11915

That's my guess which you would need to double check.

@Randy 8ifj62
Thanks. I looked up that part but the soleniod harness connector has 8 pins on top and 7 on the bottom. But even if that was the part, that still leaves me with the problem that I can't figure out which color wire goes to which pin (like the issue with the blue wires that I have). Any idea how I can find a legend for the solenoid harness? Thank you!

The electrical section of the FSMs are a main b1tch to find. I've been looking forever. Probably be easier to find a picture on the net or video of someone dealing with that connector.

I downloaded the electrical FSM and that's what I was going off of to give the initial post. You need that manual to move forward. It's easy enough to follow with a little bit of time.

pm me and I can email it over to you. It's about 6 megs.

Wonderful! Thank you so much. Yeah. I've spent what feels like dozens of hours online and I wasn't able to find what I needed either. I'll look for a good photo; that's a good tip, thanks.

There was a post on here just recently that showed a youtube video of what you want to do, just don't remember which post, if I find it will advise.

Oh thanks. I didn't find a relevant post but knowing that you might have seen one encourages me to try again

Try "Transmission Issues - P0977 error 2005 4runner" Danny Llama 5-14-22
also, youtube video, "How to fix Toyota 4Runner transmission solenoid problem"
Ismiv Miranda.

Also, I think if you drop trans pan, disconnect wire harness from solenoids you can pull the harness out and possibly thread a new one back in. Watch some youtube videos on trans rebuild.

Quite honestly I would go with what rdruss suggested. That connector is a known problem area for corrosion, and with that many miles, there's a fairly good chance you've got some green goop on the pins just waiting to cause trouble. Replace both halves of the harness, that way you won't have to mess with splicing wires and causing more opportunity for moisture to get in there and cause shifting issues.

this is the youtube link, though am not so sure it would help you resolving your issue.

https://www.youtube.com/watch?v=v3C4tp_h1cI

how were you able to unclip that tranny connector.. is it a straight pull upwards?. its really in a tough location, been unable to unclip the harness to continue trouble shooting the p0977 on my truck

how were you able to unclip that tranny connector.. is it a straight pull upwards?. its really in a tough location, been unable to unclip the harness to continue trouble shooting the p0977 on my truck

You may have to use your phone as a periscope of sorts... but if you look at the "outside" of the harness (facing the drivers side) you should see what looks like a little handle. If you push the button and raise that upwards, it will release the latch and it should slide straight up.

Be VERY GENTLE with this. The pins in there may be a little stuck and you don't want to break them off. Spray it all with DeOxit and let it dry before putting it together. And rub a little dilectric grease on the seal too. You don't want moisture getting in there -- that's where like 90% of transmission electrical problems come from.

@earthrealm here's a link to a video where the guy replaces the connector, he doesn't show how he got it unclipped and on my computer I couldn't hear what he's saying very well, but he does show both the old connector and the new one very well which may along with Montego Murph's tutorial help you figure out how to unclip it.

https://www.youtube.com/watch?v=v3C4tp_h1cI&feature=youtu.be