Supra Wiring Harness | eBay Find great deals on eBay for Supra Wiring Harness in Other. Shop with confidence. Find great deals on eBay for Supra Wiring Harness in Other. Shop with confidence. Skip to main content 86-88 Toyota Supra MK3 OEM Right side cabin wiring harness loom 82162-14040 (Fits: Supra) $99. Buy It Now. Wiring Harnesses and Looms - Toyota Supra Performance This listing is for a brand new 1JZGTE engine harness swap into the 86.5-92 MkIII Supra. These wiring harnesses are built using new wire, new OEM terminals, and new OEM connector housings. Designed for use with the JDM ECU (High impedance injectors, MAP and IAT sensor, no MAF wiring).