iWire - Subaru Harness Merging - Subaru Wiring Harnesses Add in AVCS Bulkhead Wiring - $200 (Only for USDM 2.0 WRX harness, running 2001+ JDM STi) Price Includes iWire AVCS Wiring Kit and labor to install. Cruise Control for DBW Cars - $200 Non DBW cars will reuse factory setup (cable-throttle vehicles include cruise control by default) Auto to Manual (As part of a merge) - $200 sti harness | eBay Find great deals on eBay for sti harness. Shop with confidence. Skip to main content. eBay Logo: Shop by category. Shop by category. Enter your search keyword JDM Subaru Impreza WRX STi Wiring Harness Wire Loom Dash Version 7 #2892. Pre-Owned. $200. From Canada. Buy It Now +$100 shipping. Watch.