Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How easy is it to wire in a cord to the fuse box to give corded use an option?
Document: Only radar that is accurate and works just on batteries alone with the option of a straight power cord. Light weight, easy display, and functional
Personally I don't like speeding in the city, so it's not a problem to me at all.Overall, this S2 is a tool that very easy to use and performing well, except a deep price to pay. That's the reason I give it 4 stars.
I've had this detector for about a year now. I also own a BEL RX65, and have previously owned a Passport and Escort. I just love this unit! It is so easy and convenient to use! And it works so well. I can't tell the difference between my corded unit and this one!I did turn off the motion detector turn off and placed it on manual turn off.
Reviews I read varied from great to terrible. My experience has been only good to great. Batteries keep on going and going. Side by side comparison with  my corded Valentine echoed the test data I saw that showed only about 10% less alert distance -  still much better than most.My objective was use on my motorcycle; wireless to avoid clumsy electrical taps; compact, easy to remove and secure at stops. I can hear it through my helmet at highway speeds.
I recently purchased this S2 radar detector after some research. To be frank, I would say the price is not cheap, and I was a little hesitate to spend over $300 for such a thing as of being a first time radar detector buyer/user.The first impression is this S2 detector is very easy to use, no cord, take it out of the package, insert two AA batteries, put it on the wind screen, power on, then you are on a good track.
Speed cams are detected too, but it does not give a whole lot of warning unless there is another speed cam on the other side of the street tagging opposing traffic. The K band that Cleveland Hights uses around town is easy to detect as is the Ka that the City of Cleveland Uses.
It just switches off the power-using detector circuitry.A sleeping sentry can't possibly give early warning when radar is used in the instant-on mode. And it gives up all hope of detecting the POP mode.Sure, a cordless detector would be convenient. And I'll be out in the lab cooking one up as soon as the laws of physics are repealed. "Stick with a corded detector and you will be more satisfied than with an uncorded one like the Solo 2.
Great product, works better than any other radar I've had and love the cordless feature. Easy to remove in and out of the car without a cord displaying that I have a radar in the car..which leads to a broken window from thieves.
I mounted my Escort 9500ix on my visor with the visor clip and hardwired it to my cars fuse box and now it comes on and off when I start my car and the performance is twice that of the Solo 2. Plus the BIG advantage is with the 9500ix you get GPS which records the false signals frequencies and their exact locations so when you go by them three times it erases them so your detector just gets quieter and quieter. NO MORE FALSE SIGNALS! WONDERFUL!
Even so, this device is crisp to use. Navigation of settings, should you decide to change the out-of-box defaults, is simple and straight-forward.Overall: Nothing compares. No cords. Battery life to cost ratio for such is a non-issue. Real-world sensitivity beyond actual need. No questions asked, the best deal out there for a radar detector, period.
Answer: I have to assume you don't have a 9v DC outlet (cigarette lighter) It would depend on the car & how easy it would be to get to and work on the fuse box/ and run wires to the dash area. BUT, if your thinking of wiring in a DC outlet for this Detector, you might as well purchase a different unit that is designed to utilize the full advantages of DC power. That is unless you already own this unit. Myself, I've purchased 4 Eveready NiMH 2500mAh batteries, charge the 4, then recharge 2 used as needed while keeping the other 2 for spares.