itbrti

I ordered an SPH-DA01 through eBay a few days ago and I'm getting it professionally installed locally when it arrives. I want to show up with the correct parts in hand for the parking brake install so I don't look like a total idiot, but I'm getting confused reading everything. I've read through all 14 pages and here's what I want to know clarified: 1. TR7 and TR-7 are the same module, but have different features. The TR-7 is older with 16 features while the TR7 is newer and has features 17-23. (post #73) 2. I need both a TR7 module and relay for AppRadio (SPH-DA01). There is no relay nee