Battery wires to MPPT controller

I'm installing a solar controller to my system. I currently have a 24 volt battery bank connected by enormous cables ( 2 each to positive and negative battery terminal) to a large positive and negative DC buss' . This bus is in turn connected to the inverter by large cables. When wiring the new charge controller, is it ok just to wire directly to the bus or must the wires go to the battery terminals. Same question for the small battery voltage wire that comes from the controller. Thanks for comments.
Comments
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
The 'voltage' cable (likely a thin phone cable type?) should be connected directly to the battery. It measures the actual voltage at the battery rather than the system voltage. This avoids reading the voltage dropped over the length of the cables. If you give the make and model of the charge controller we might be able to find a manual on line for you to read.
- Assorted other systems, pieces and to many panels in the closet to not do more projects.
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah LFP 24V nominal battery with Daly BMS, used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
And, here is a web page that goes into a bit more detail:
http://www.smartgauge.co.uk/batt_con.html
-Bill