The first one is right too. You need a 4pole 1/8" to 3pole 1/4" ultimately. You could do this by using adaptors or by soldering a TRS1/4" onto the right wires. There are no cables like this without adaptors or soldering. If you have other CV equipment your best off to wire up to 1/8" mono to retain flexibility, just like those shown in first and second elektronauts links