Starter & Alternator Harness Replacement on 1994 E420 Jun 04, 2016My wiring harness bio-degraded and had to be replaced. Beside the starter and alternator it also connects to the oil pressure sensor and the oil level sensor. I ordered part number 1245403130 from my local dealer for $130. I could not find information on replacing this harness in the CD manual, nor on this forum, so here it is: Removal: 1.w140 Wiring Harness Replacement -- Easy? 1994 S420Jun 10, 20111994 E320 Wiring Harness and ETAFeb 26, 2010wiring harness r129 sl500 94Feb 22, 2005See more results mercedes wiring harness sl500 | eBay www›Search›mercedes wiring harness sl500Find great deals on eBay for mercedes wiring harness sl500. Shop with confidence. Skip to main content. eBay Logo: Fits 1994-1995 Mercedes SL500 Engine Wiring Harness Genuine 43866TZ. Brand New. $1,032. 03-06 Mercedes SL500 SL55 Battery Starter Alternator Wire Harness 2305404932 OEM (Fits: Mercedes-Benz SL500) Pre-Owned. $123.