ford f53 service manual | eBay Find great deals on eBay for ford f53 service manual. Shop with confidence. Skip to main content. eBay Logo: 2003 Ford F-53 Motorhome w/ Wiring Diagrams Shop Service Repair Manual Book. Brand New. $88. Was: Previous Price $110. 2003 Ford F-53 F53 Motorhome Chassis Service Repair Shop Manual W Wiring Diagram. 99 Ford F53 chassis V10 / motorhome. A/C low pressure Sep 04, 201399 Ford F53 chassis V10 / motor home. A/C low pressure switch has no power. Can trace wire back partial distance, but can not locate power source for wire. Motor home body has added wiring and relays, nothing marked. Time consuming to trace all Wiring Diagrams - Winnebago Welcome to Winnebago Industries Wiring Diagrams. Please choose a year from the menu at left to start your search.