hmmmmmmmm
I think I understand what you are saying, but when you look at the drawing, it seems that the red drives the motor when given the permission to and the other wire (PU) powers the switch to the proper relay. As is now, looking at the drawing, the two wires you've attached to the switch is to reverse polarity to signal the VTS motor to turn one way or the other. But with just one wire to each side of the switch, it will be dead. No complete circuit at all.
Try this. Hook up all wires as I printed in the above post. Then, disconnect the plug(s) leading to the VTS motor themselves. Then, take a voltmeter and put the positive lead in one of the plug wires and the other to a ground. It should show no power. Then, do the same to the other, should show the same. Now, with one lead in one of the plug connections coming from your switch and one to ground, push your VTS switch on the handle bar (up or down, depending which wire is in circuit), you should be showing close to 12 vdc.
You have to have a power wire running to the VTS interupter switch on the handle bar. If not, like I said above, it will be a dead circuit. The two wires you have connected already, one is for up, the other for down. But you have nothing to charge those wires for communication. That's what the purple wire is for.:cheers: