McIntosh / Audio Research 12V remote start jack

I own an Audio Research REF3 and a McIntosh MC152. It would make life easier if powering on the REF3 would also power on the McIntosh. I've never used the 12V remote start jacks on these components, and wonder if they are compatible. Has anyone tried linking these two components? What kind of interconnect and termination is needed? Looks like stereo 1/8" on both ends would do it...? Thanks in advance for any advice.