DTS 'Clean Power' cable - which battery?

[pcmpete]

I have a DTS/Axius system and get different error messages, after research and help on this forum I cleaned all my battery connections, changed out my alternators. now the errors have reduced in frequency, but I still get only approx 13v showing on my Vessel View.
After doing more research, I have discovered that the DTS 'Clean Power' cable is connected to the house battery and not a starting battery.
1. Must it be connected to a starting battery?

2. In a twin engine setup, should there only be one 'clean power' cable?

thanks

 

[dingbat]

Install DTS power harness directly to the starting battery only.

NOTICE - DTS & Optimax Engines

IMPORTANT: Battery cable size and length is critical. Refer to engine installation manual for size requirements.
DO NOT USE WING NUTS.
DO NOT USE DEEP CYCLE BATTERIES!

DTS (Digital Throttle and Shift) applications and Optimax engines must use a marine starting battery with 1000 MCA, 800 CCA, or 180 Ah.

 

[paulswagelock]

Yep, starting battery. As mentioned, make sure it is appropriately sized per the minimum CCA and AH ratings.