Wiring Gurus: 1uz to s13 Help. - Zilvia Forums Aug 24, 2017So here it is. i know many people are doing the 1uz to s13 swap so lets get a wiring thread for this down. im going to post all the s13 ----> 1UZ info i have gathered.S13 1uz swap - Zilvia Forums | Nissan 240SX (Silvia) andNov 23, 2014Completed 1UZ swap!!!! S13Apr 25, 2013See more results S13 240sx 1JZGTE Swap Wiring Harness | Wiring Specialties This harness is specifically engineered for a USDM LHD S13 Nissan 240sx (89-94) with the 1JZGTE non-VVTi engine swap. It was developed in house on an actual 1JZGTE non-VVTi engine in an S13 240sx chassis to ensure a perfect fit to all engine connections. Wiring Specialties offers a number of options for common performance upgrades for this product.