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793 Posts
PAC's product reliability is pretty poor in my book. Back when I had a Pioneer HU in my truck I tried using the RP5 because it combined the steering wheel controls into a single unit as opposed to the PAC OS-4 which required a separate steering wheel interface. When I first connected it I tested all the functions and it worked great. However after I placed the HU and all the wiring back into the dash the steering wheel controls stopped working. Initially I thought maybe I had accidentally unplugged something or possibly pinched a wire. I pulled the HU back out and inspected all the connections and wires and everything checked out fine. A buddy of mine works at a car audio shop and he told me that they have had a lot of issues with PAC and no longer use any of their interfaces on their installs. So I put the OS-4 back in and soon after that I purchased the Advent OGM-1 to replace the Pioneer HU. I haven't used it myself but I've heard that the iDataLink Maestro interface, though a bit on the pricey side, works very well.