m connecting the quantised out a to the kbd cv but the sequencer doesnt trigger.
Connecting the quantised out to the kbd cv-labeled modulation input does something different. The kbd cv is actually the control voltage that (among other things) allows you to control the pitch of the oscillators' sound with your keyboard. It is internally wired to all three oscillators so that you can use the keyboard to control their pitch (if you don't understand what I mean by this you have to go through the manual from the beginning on).
Now, if you connect another source to the modulation input labeled 'kbd cv', what you actually do is override the kbd cv control and replace it by something else. For example, wiring the quantised out of the sequencer to the kbd cv modulation input means that the pitch is now controlled by the sequencer instead of the kbd cv.
Now, for the other part of your question: to trigger the sequencer (assuming you want to trigger it with your keyboard) you have to connect the gate output to the start/stop input of the sequencer.
Hope this helps. I think it would be good to read the manual from the beginning on again if you don't get my advice.