Does anyone have a pin-out of the input connector to the infinity amp on a 2008 Ram. My son bought this truck, and it appears the previous owner tried installing a new stereo (Pioneer AVH-X4600BT) using an aftermarket connector and jacked it all up. I bench tested the Pioneer, and it works but didn't work in the truck. I found cut wires etc, like they couldn't figure it out. None of the pin-outs i've been able to find online match the wiring on the 2008 OEM Ram harness for the amp. THX in advance...great site!

 

Sunracer,
I am currently trying to upgrade my system as well. Try going to http://www.rambodybuilder.com/2008/intro.pdf and navigating to the wiring diagrams. Make sure you use internet explorer to do this, and possibly compatibility mode. The site would not work for me when I tried edge or chrome.
I believe you will be looking for the amplifier C1 and C2 connectors.
Let me know how it goes for you.

 

Trnsistr,
Many thanks, I beat my head against the wall trying to use the rambodybuilder website (fantastic info there BTW)...IE worked fine (i use mozzilla normally).
AMP C1 & C2 are at the infinity amplifier and not the ones I needed. After much searching i found what i was looking for:Radio C1 & Radio C2. The problem is all the extraneous connections for "Hands Free", (steering column controls) satellite radio, etc. really muddle the picture. I think i have what i need now. I will update down the road.

 

Glad to hear it helped some. Just be aware the radio connectors only used the head unit rear speaker outputs. Radio C1 only had wires for CAN B bus, power, ground and rear speakers. Radio C2 had the connections for Satellite radio inputs. If you are going to hook up the aftermarket head unit I would bypass radio C1 and C2 making connections directly to the speakers themselves. you can splice in on the amplifier C1 and C2 I believe, or just run wires to the speakers. As for the other connections like ACC and illumination I believe you can splice to the key controlled cigarette lighter for ACC and the wire that provides the illumination to the AC controls for dimming of the head unit. I also hope the previous owner already got the antenna wire adaptor.

Steering wheel controls were controlled by the CAN bus I think. My new head unit says I can hook up a wire to it but I probably will not. The handsfree or Uconnect was an additional addon that had a intermediate harness between the radio C1 and headunit that diverted all the sound. I simply pulled mine out and connected radio C1 directly to the head unit for now, until I can decide on how I am going to route my wires. My new head unit has handsfree so the Uconnect pack is not needed.
Good luck, Hopefully you'll be up and running soon.

 

I'm trying to use the existing Infinity Amplifier, but have had no luck getting any sound out of it. I'm not sure where the amp audio inputs are....don't know at this point if the amp is bad, the pioneer is bad, or both. I know the pioneer's pre-amp outputs work, but don't have any speakers to test the main outputs.

 

Are you sure you are getting power to the amp, to tell it to turn on?

 

Hard to tell. The fuse is good. I tried pulling the amp to bench test it, but couldn't get the 4th bolt in the back out. near impossible to get at. Gave up. Does the amp have a remote turn on signal? If so, the Pioneer has a signal for this, but where it goes.....I couldn't locate it on the schematics....at least not in plain english.

 

I think it's CANbus controlled. I don't think you can use it unless you use the stock head unit that sends the canbus signal. I may be wrong though.