I was installing a kill switch into a 1993 e-350 van so I cut the red with light green stripe wire at the ignition switch to install the switch. I saw that this should cut off the fuel supply and work like I wanted, but now the van will not start and I have power on both sides of the switch I installed, and the fuel pump cut-off switch is not tripped. I just don't know what to do now.

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1993 Ford e-350 e-350