# Redtop S13sr into s13 chassis **URL:** \ **Category:** SON240sx Automotive\ **Created:** [July 10, 2014, 10:23am UTC](https://forums.speedlife.net/t/redtop-s13sr-into-s13-chassis/269977 "2014-07-10T10:23:34Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![elemental](https://avatars.discourse-cdn.com/v4/letter/e/6de8d8/32.png) [@elemental](https://forums.speedlife.net/u/elemental)\ **Post date:** [July 10, 2014, 10:23am UTC](https://forums.speedlife.net/t/redtop-s13sr-into-s13-chassis/269977/1 "2014-07-10T10:23:34Z")
Need help with the wiring harness, where it mates the Sr harness to the ka harness right by the fuse/relay box. (Red plug and grey plug) if anyone can do this I’d be willing to pay you for your time or if someone has the schematic to match up the wires I’d be able to do it myself, thanks guys Sent from my HTC One using Tapatalk ---
**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:** [July 10, 2014, 3:13pm UTC](https://forums.speedlife.net/t/redtop-s13sr-into-s13-chassis/269977/2 "2014-07-10T15:13:22Z")
> **[FRSport.com—Aftermarket Performance Parts](https://frsport.com/SR20DET-Swap-Engine-Harness-Wiring-Diagram-Guide-SR-SR20_t_26.html)** > > FRSport.com That’s a decent guide with pics, should help you out, make sure you do it proper with good solder, and shrink wrap the solder point is my recommendation. ---
**Author:** ![elemental](https://avatars.discourse-cdn.com/v4/letter/e/6de8d8/32.png) [@elemental](https://forums.speedlife.net/u/elemental)\ **Post date:** [July 10, 2014, 5:30pm UTC](https://forums.speedlife.net/t/redtop-s13sr-into-s13-chassis/269977/3 "2014-07-10T17:30:45Z")
That’s what I was following but it doesn’t have all the chassis relay wires in the last chart Sent from my HTC One using Tapatalk