Doepfer

Having jumped in at the deep end and purchased a DIY Synth I have been busy trying to get my head around the connection of same. I spent 30+ years in the telephone industry most of it when the equipment was electro-mechanical so never realy got into electronics. Now being retired I have started to try and catch up with my education.
To cut to the chase I have mapped out all of my controls i.e. Pots Sockets switches etc. but having studied the diagram on page 19 of the users guide I cannot make out if I should be connecting   +or-12v or +or-5v  to the following potentiometers:- VCO Tune, VCO Fine, VCO PW,  VCF Frequency and VCA init Gain. I read in the notes that the range of VCO PW CV1 is shown as 0---+5v but it says the same for VCO PW CV2 which goes to PWM and this does not have a voltage connection. Am I reading the diagram wrongly or am I right in thinking (I don't why) it is +12v.
If some kind person could put me right and stop me blowing the board I would be truly grateful.