I know this post is "archival" now, but thank you for taking the time to put this information together. I just recently purchased an '86 SR5 and the passenger seat cables are broken...I'll be putting this tutorial to work in short order.
I'm new to this forum, early in the process of restoring an '88. Just wanted to say thanks for this info - I got the parts and fixed the seat in about 30 mins this evening. Thank you!
Thanks I like the solution bro. Question as I am about to fix mine on an '85.
It looks like the 3 barrel connector is only using 2 cables now and you basically directly connected the rotating latch from one rail to the opposite rail by anothe r cable?
My unit has 1 'input cable' controlled by releasing the seat back to spring forward and so pulling on the 'Y' or 1 to 2 barrel which of course pulls on the 2 cables to release the 2 latches (one on each r/h and l/h rails.
Unless of course Toyota changed the design after 1985...... ?