Brake warning light - Proportion valve wire connection ?

I bought my 68 cuda after it had been converted to 74-76 manual disc up front. I believe they switched the prop valve from the donor car as well. The brake warning light has always came on when I apply the brakes. I have the cast style prop valve as seen in the picture. My warning light wire is connected to the front post on the prop valve. Is this correct or does it go on the center post.

Thanks

The front "post" is not an electrical connection. Its the end of the plunger that moves to turn the light on and off. Way back in the day, MOPAR shop mechanics had a special tool to lock the plunger in place while bleeding the brakes. I used to have one but only God knows where it is now. The top post is where the ground wire goes. Some of the other posts give you the procedure to center the valve.

Larry