# SR harness splice

**URL:** https://forums.speedlife.net/t/sr-harness-splice/81513
**Category:** SON240sx Automotive
**Created:** [August 29, 2004, 4:00pm UTC](https://forums.speedlife.net/t/sr-harness-splice/81513 "2004-08-29T16:00:22Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![240newbie](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/240newbie/32/5487_2.png) [@240newbie](https://forums.speedlife.net/u/240newbie)
#### Post date: [August 29, 2004, 4:00pm UTC](https://forums.speedlife.net/t/sr-harness-splice/81513/1 "2004-08-29T16:00:22Z")

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ok im doing a harness for someone and im doing the 2 plugs that u need to splice from the KA. theres a brown wire for the O2 sensors power… and on the charts is says to hook it up to any 12V switched supply?  
im wondering where or what that means?

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<div class="post-metadata">

### Author: ![nocwage](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nocwage/32/5489_2.png) [@nocwage](https://forums.speedlife.net/u/nocwage)
#### Post date: [August 29, 2004, 5:52pm UTC](https://forums.speedlife.net/t/sr-harness-splice/81513/2 "2004-08-29T17:52:38Z")

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it means don’t run it right off the battery, it should only get power when the car is on.