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12-04-2011, 07:56 PM | #1 |
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DIY - 2012 Impreza GPS/Radar Detector Hardwire
FIRST - write-up for the 2012 Impreza!
-------------------------------------------------------------------- This is a simple DIY to show you how to hardwire a GPS and/or radar detector on the left side of the dashboard: 1) First we are going to remove the left dash trim panel: 2) Pop open the fuse cover panel, put your hand inside and push the clip to pop off the panel: 3) Panel removed: 4) I took some fish tank air tubing and split it down the center: 5) And placed it around the large opening in the dash frame to act like a grommet since the edges are sharp: 6) I used electrical tape to secure the tubing and to further reinforce the surface. Also was liberal in wrapping the wires around that area: 7) Route the wires down the side of the dash, if you have a Garmin with the traffic data module, you can secure it to the side with double sided foam tape. 8) Used a mini fuse add-a-line that I picked up from the auto parts store, I tapped into the "Cigar" fuse block. Added a 10AMP fuse for protection. Hooked up the ground wire on the bolt that holds the hood release. I highly suggest getting the add-a-line, it is clean and safe, require no cutting of factory wires: 9) I connected all the wires to a dual cigarette socket so I didn't have to cut the GPS/radar detector wires. Zip-tied it all together and secured it to the top of the fuse panel. 10) This is what it should look like after you put the panels on. I had to pull the rubber molding back a little bit to tuck the wires behind it:
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Last edited by ST Eye; 12-04-2011 at 08:21 PM. |
12-04-2011, 08:15 PM | #2 |
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Finished result:
All in all, I am happy with this install, it is pretty clean. I like the fact that I was able to fit the FM traffic module behind the side panel. |
12-04-2011, 10:42 PM | #3 |
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very nice.
But how effective is the radar detector in that position? Aren't they supposed to have a clear view forward and back, meaning the higher the better? |
12-04-2011, 10:47 PM | #4 |
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I'm sure it's not the most optimal position, however I have had it in this position for 15 years, and I seem to get good results. Others have mounted it above the rear view mirror. I prefer to not be able to see the lights on the radar detector from behind the car.
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12-23-2011, 09:49 PM | #5 | |
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12-23-2011, 11:23 PM | #6 |
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No problem! I am glad you got something out of it.
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01-03-2012, 07:17 PM | #7 |
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By the way, I used to place my radar detector directly at the center of the steering wheel mounted low on the windshield and seemed to get really good results as well. Probably not very good rear protection though I would guess.
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01-03-2012, 08:36 PM | #8 |
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That add a line thing is pretty neat. I had not seen those before.
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01-03-2012, 08:58 PM | #9 |
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01-04-2012, 10:13 AM | #10 | |
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O, sorry. Not bad |
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01-05-2012, 11:36 AM | #11 |
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Please advise if the add-a-line is a ATM or ATC.
Thanks. |
01-05-2012, 01:59 PM | #12 |
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01-05-2012, 03:11 PM | #13 |
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Thanks for the info. My company (electronics distributor) has some in stock (Bussmann P/N BP/HHH).
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01-05-2012, 07:58 PM | #14 |
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I've been to Pepboys and Autozone and both places have the mini's out of stock!
One other question. How easy is it to remove the A-pillar trim to snake a wire through there and up to the headliner? I don't like having my radar mounted that low because it doesn't get its optimal signal down low. |
01-05-2012, 11:01 PM | #15 | |
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Quote:
I am hesitant to wiring anything up the A-pillar since I believe that the curtain airbag is in that area. In my '08 STI, I think the A-pilar plastic trim has part of the airbag inside. Might want to research a bit to see if it is part of the airbag. |
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01-25-2012, 11:42 PM | #16 |
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For those who don't have an auto dimming mirror, would you be able to tap into the prewired harness behind the map lights for power rather than the map light itself? Would it really matter?
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01-26-2012, 12:10 AM | #17 |
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Not sure, but it would sound plausible for both to work. There are Valentine 1 install threads that should tell you the correct wires to tap into for switched power.
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01-29-2012, 04:46 PM | #18 |
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sorry, im not too familiar with car wiring. can you elaborate on how you grounded the circuit, and how the cigarette socket interfaces with the add-a-line? thanks
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01-29-2012, 04:55 PM | #19 | |
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01-29-2012, 05:08 PM | #20 |
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You can tap into the prewired harness for the auto dimming mirror even if you do not have the auto dimming mirror
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01-29-2012, 06:13 PM | #21 | |
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01-29-2012, 08:02 PM | #22 | |
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Quote:
Basically the add-a-line will be your hot (positive) connection, the ground wire (negative) will be connected to anywhere that is metal on the body. So these wires will be connected to the splitter and you then connect your radar detector into the socket. This allows you to connect your device without having to cut the original wiring on your device. One thing you want to do is make sure the positive wire is the center of the socket, as opposed to the wall of the socket which should be be negative connection. Very true, but I wanted to install my Garmin and radar detector on the bottom of my windshield. |
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02-01-2012, 07:48 PM | #23 | |
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02-15-2012, 10:08 PM | #24 |
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one final question... how did you attach the wire to the ground bolt? do you have the size of a nut that fits?
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02-15-2012, 10:16 PM | #25 |
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