Carb 302 Ignition Wiring | Mustang Forums at StangNet Feb 20, 201835. You will need to construct a wiring harness from the ‘85 carb distributor to the Duraspark box if you go Duraspark, or other distributor to coil wiring. 36. The voltmeter picks up its signal from the switched voltage present on the instrument panel, so you don’t need to worry about that. 37.Wiring Diagram For Carb 302 With Mechanical Fuel PumpJun 13, 2019anyone have a wiring diagram for a carbed 302? | MustangJun 11, 2013HOW DO I CARB. MY 5.0? | Mustang Forums at StangNetSep 10, 2009'86 EFI 302 to Carbed 302 transition.. | Mustang ForumsJul 15, 2008See more results FORD 5/302 Wiring Harnesses - Free Shipping on Orders Find FORD 5/302 Wiring Harnesses and get Free Shipping on Orders Over $99 at Summit Racing!