I have a 87 cutlass supreme with no a aftermarket edelbrock carburetor and a hei distributor everything works right but I have not lock up on my 200 metric transmission I traced the wires I took a pick of what I have any way to make lock up work without the computer I bought a pressure switch that mounts out side the transmission but I didn’t have the port to hook it up so I sent it back I heard of some guys using a switch to do it any info would be appreciated thanks.