Stereo/DVD: "Auxiliary In" Hack for HU-6XX series

[pierremcalpine]

I'm looking to install a Aux Input mini-jack connector to my HU-615 unit via the tape deck PCB. I've seen tons of detailed instructions on how to perform this hack with other head units but not as much info with the HU-6XX series. Has anyone here performed this hack successfully?

I've got a good idea of where I need to solder the L and R leads (to the middle terminal of the two triangular connectors marked Rch/VR701 and Lch/VR702 and have a good idea of where I might be able to get a good ground but some postings out there have suggested that I also need to insert two capacitors on the L and R leads that I solder to filter out the DC noise to the mini-jack plug-in.

I'm looking to confirm that I've got the right L and R connectors identified and also to verify that I need the capacitors...many postings do not refer to this at all and suggest that simply soldering leads to the right connectors will do the trick.

Any comments?