# transmission question

**URL:** <https://forums.speedlife.net/t/transmission-question/128255>\
**Category:** SON240sx Automotive\
**Created:** [September 23, 2009, 3:59pm UTC](https://forums.speedlife.net/t/transmission-question/128255 "2009-09-23T15:59:18Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![89\_coupe](https://avatars.discourse-cdn.com/v4/letter/8/e0b2c6/32.png) [@89\_coupe](https://forums.speedlife.net/u/89_coupe)\
**Post date:** [September 23, 2009, 3:59pm UTC](https://forums.speedlife.net/t/transmission-question/128255/1 "2009-09-23T15:59:18Z")

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hey guys. im in the middle of swapping out my transmission and i have a couple of questions. i have an 89 240 that had a bad transmission so im swapping it with a better one. the transmission im putting in is off a ka24de. i know that they are pretty much the same. so heres the questions.

1. there is a vaccum line on the newer tranny and my old one doesnt have one at all. does it go anywhere or should i just plug it up?
2. there is an extra sensor that my other transmission didnt have. anyone know what it is? do i need it?
3. the speed sensor on my old transmission had a wire coming out of it where as the new transmission uses a harness to plug in. can i just find any 2 prong connector that fits and wire it up? or do i need a new speed sensor?

thanks