I am building a trike with a 2002 dodge grand caravan as the drive train. This was my daily driver for over 10 years. I cut away the body leaving the entire front intact. Removed dash leaving wiring intact. Motor ran fine until I started cutting out unwanted circuits. airbag squib lines replaced with 3.3-ohm resistors. Dash controls removed, overhead controls removed. Headlights work, motor cranks no start. I have an injector pulse but no ignition pulse. I do have voltage at the coil and injectors. No ignition pulse at any coil input equals no spark. I am fairly sure I remove some wires that need to be connected just not sure which. Any guidance or guess? Willing to try anything.