Raymarine forum

I have the Raymarine ACU 100 auto pilot. what is the purpose of the 3 meter blue and black spur cable compared to the wht and blk cables. and from the backbone, does it go to a particular device? 1) control head ? 2) sensor ?

Hi Gemini,

Thank you for your enquiry.

The Blue and Black cable is a backbone cable and the white and black are spur cables.

This FAQ accessed here will help explain in more detail, also check out this FAQ found here .
thanks
Derek