1997 f350 wiring harness | eBay www›Search›1997 f350 wiring harnessFind great deals on eBay for 1997 f350 wiring harness. Shop with confidence. Skip to main content. eBay Logo: Shop by category. Shop by category. Enter your search keyword 92 - 97 FORD F250 F350 F450 DASH DUAL FUEL TANK SELECTOR SWITCH WIRE PIGTAIL OEM See more like this. I have a 97 ford f350 dually, the wiring harness that I have a 97 ford f350 dually, the wiring harness that connects the O2 sensor, clutch position sensor, transmission position sensor, transfer case sensor, wrapped around my driveshaft and tore out the main plug which appears to connect on the firewall of the drivers side. Ford tells me this harness is now obsolete, so im looking for the main harness connector coming from the engine compartment.