1080iAddict

This thread is a Do-It-Yourself installation tutorial for a V1 (or any powered radar detector) hardwire windshield installation to a switched power source at the interior dome light.

It is noted that this installation was performed on a 2006 997S with the Self-Dimming Mirrors option. If you do not have this option, I cannot guarantee you will have the necessary wire harness because the switched power source is the same source that powers the self-dimming rear view mirror.

As of this posting, I have experienced no side effects. The mirror works and so do the rain sensing wipers (same wire harness).

Thanks to member MJONES and TNUNNERY for their help, as well as LOREN at RennTech.

Total install time is about 2 hours.

Good luck and enjoy!!!!

1080iAddict

Locate the straight power wire with the modular connectors on each end. Cut this cable about 6 inches from either end. Strip the wires on the 6" piece to expose the black, yellow, green and red wires. Cut the black and Yellow wires. NOTE: THE GREEN WIRE WILL BE HOT (POSITIVE) AND THE RED WIRE WILL BE GROUND (NEGATIVE) DURING THE REMAINDER OF THE INSTALL. Coat the ends of the green and red wires with solder using a soldering iron.

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Locate the direct wire harness, and cut the red fuse red wire leaving about 3 inches on each end. Then cut the black wire to have about 4 inches of wire. Strip both ends on each wire and coat the bare ends with solder using a soldering iron.

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Remove the dome light assembly following these directions

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Pass the modular wire you prepared between the windshield and the dome light assembly housing so that the modular plug is hanging in front of the windshield and the bare wires are inside the light assembly housing.

1080iAddict

Now, use a blanket to cover the interior of the car in case you drip some solder. Then, solder one end of the red wire with the fuse to the green wire on the modular wire assembly. Next, solder one end of the black wire you prepared to the red wire on the modular wire assembly. Let it cool, and use either heat shrink tubing or electrical tape and tape it up.

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Locate the 10 wire harness inside the dome light assembly (there are only 9 wires in there) and remove the black tape carefully with a project knife. The wire at pin 2 is switched 12VDC (THIS WIRE IS BLACK / ORANGE and the wire at pin 10 is ground (THIS WIRE IS BROWN). THERE ARE PIN NUMBERS ON THE SOCKET. NOTE: LOOK AT THE WIRES GOING DOWN TO THE MIRROR - NOT THE WIRES THAT GO UP INTO THE ROOF WHICH ARE DIFFERENT COLORS). You really wont get this wrong - its pretty intuitive (yeah right - now that we know which wires they are - this is the magic here).

1080iAddict

Using wire cutters, CAREFULLY cut 1/4 way down on the wire to 'grip' and 'pull' the insulation back on each of the two wires. Apply solder to the bare wire. If you cut it by accident, it will blow up in 5 seconds. GET OUT OF THE GARAGE. Kidding. If you cut it, just twist the ends back together, but what you want to do is solder the remaining end of the red fuse wire to the ORANGE / BLACK wire and the other end of the black wire to the BROWN wire. Then, apply tape or shrink tubing. Do it slowly and neatly. After this step, plug the modular plug into the V1 and it should NOT work (no key in ignition). Then place the key in the ignition and turn the key on and it SHOULD work!! If it doesn't, you probably did not turn on the V1 or you got the polarities reversed (this happened to me because the cable to power the V1 is actually a crossover modular cable - - but follow these instructions and you will be OK).

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Pack it all back in the dome light assembly neatly and replace the dome light.

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Test your work and take a look. You now have a hardwire switched V1 with no cables!!!!

1080iAddict

So there you have it.

Let me know if you have any questions or if you run into any problems.

- Adam

vtach88

looks great! Thanks. I don't have the self dimming mirror - anyone out there know if there would be any problem with the above installation?
Thanks, again!

1080iAddict

vtach... you can carefully pull your dome light cover off and look to see if the 9 wire cable harness is in there. You must have that harness to do this install. Do you have rain-sensing wipers? If so, you might be in luck. If not, chances are there is no harness there. But, maybe you'll get lucky and the female end of the harness connector is tucked up in there, i.e., in the event you did order the option, maybe it was pre-wired? Let me know. If that is the case, the wires are different colors on the demale end of the harness (in other words, not the end I tapped) but you may have switched power if you have the pre-wire, I can help you find the correct wires should that be the case.

Also, I drove to work today and everything appears to be functioning as usual. I tested the rain-sensing wipers and the mirror. There appears to be no side effects.

Buzz911S

Exactly what I was looking for! Thanks so much for posting this one. I had almost decided to wire into t he radio!! Haha...

Buzz

Fred 993C4S

1080i,

Great job! A couple of questions: I recall reading somewhere about being able to use a regular phone wire and jack for this but that you must swtich some wires around, do you know what I am talking about or am I crazy?