I can't link it but there's a good write-up on Speedy's site (Google Speedy's Garage). I'm attaching one pic he posted to give you an idea. Also look for scparts' post on page 3.
ETA: now you'll notice that they indicate different wires as power sources. I think it may come from various equipment levels so like Speedy I suggest the use of a multimeter to make sure you tap into the right one.
Yes the 2 wires plug into the back of the rear view mirror. 1 to the ground and 1 to the power, they piggyback off the existing wires already there. you just slide them in.
There is NO cutting or splicing of the wires. All your doing is TAPPING into the the rear view wiring harness.
Notice how the ends of the connections are long and flat, you are sliding them BETWEEN the power and ground connections that are already in place.
I waited to be finished before confirming the info, but I just finalized the install with the same wires that scparts indicated. I originally tried the black & white for 12V (no multimeter at my house) that Speedy recommended, but I was only getting intermittent power for some reason. Someone has to say it: it was a real mofo to do. One of the pins wouldn't slide in (you have to find the right way to insert it - it's 10 times worse than prom night) and I of course broke it. I cramped up, busted my fingertips, banged my head against the glass - hello, greasy prints - and swore enough to scare my neighbors and scar their kids for life. So I had no choice but to splice, and this without pulling the gray connector (it wouldn't come out and I opted not to rip off all the wires by accident)... which felt like performing field brain surgery on a mouse while upside down on a trapeze with a flashlight in my mouth.
Now that I'm done, and it took me several tries over 2 days, it's an AWESOME setup and you HAVE to do it. The cord running from the bottom outlet gets in the way and draws too much attention. But if you're as clumsy as I am let someone else handle it. I'm just too OCD to let some dude climb all over my brand new interior and I hope that my account at least amused and prepared you guys. It's way worth it.
Ha I just went through the same deal. Went to wire it into the rearview mirror and snapped the hot wire right where the fuse was. I got pissed and chucked that harness in the trash.
I went on eBay and found another wire harness for the same setup. Half the price and got it installed in less than 5 mins with no problems. The pins that connected there thinner and more firm when feeding them into the harness.
I have had 3 8500's so far. The older 85oo's lack the filtering tech for the roadside metering stations so it will constantly alert in the Metro areas that use them (Denver for sure). The newer ones do not and are upgradeable (thats just within their respective capabilities). I currently have a redline and would not change it for the world. You can run through that state that does not allow them without a hitch. Mounting is the issue. The mirror mount allows the unit to be visible from the road and will not work for me. I am looking at the new visor clip ($15) and the permanent cord to power it. I like the way the mirror mount works but its an expensive mount that may or may not bring grief.
2010 DY SRT Purchased 8/16/2010 Sold 4/12
2012 Stinger Yellow, Yellow Jacket Purchased 11/21/12
I like it, but it's definitely not as stealthy as some make it sound. You can't quite 'marry' the 9500 to the mirror otherwise you won't be able to access the top controls. Mine hangs about 2/3" below.
I like that you were able to keep the remote and also where you located it - much better ergos. Now for the detector itself, isn't it supposed to be as horizontal, close to the glass, and centered (not sure about that one) as possible?
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