rb20det harness | eBay www›Search›rb20det harnessFind great deals on eBay for rb20det harness. Shop with confidence. Skip to main content. eBay Logo: Wiring Specialties Pro Engine Tranny Harness for R32 RB20DET RB20 to 300ZX Z32. Brand New. $679. or Best Offer. Free Shipping. Wiring Specialties LS2 LQ9 Smart Coil Pack Conversion Harness to RB20 RB20DET.