Vortex Sound Research

Hey, I just bought a Doepfer A-141-2 VCADSR module on Craigslist and there are no -12V markings on the circuit board...I’ve also checked out the Doepfer A-141-2 Manual and it doesn’t mention power cable alignment. The guy I bought it from had it sitting in a drawer for years and doesn’t remember how it should be hooked up. are the contacts closest to the bottom the -12V ones? Thanks!