I would like to alter the 12v to an always on system.
Right now my 12v turns off when the car is turned off. I would like it to be on all the time. how do I do this?

Much has been made of the fact that Nissan’s boxy yet bountiful 2014 NV200 taxi, the downsized version of its Ford-Transit-Connect-challenging NV cargo van and passenger wagon, seems destined to become New York City’s sole taxi source.
What this Lilliputian laborer brings to the taxi table, besides some anticipated legal wrangles in NYC, is a space-saving, gas-sipping alternative to the present fleet of Ford’s dated and over-bearing, though admittedly more classy and powerful, Crown Victoria. It also brings an odor-eating headliner, antimicrobial leatherette seats, a couple of charging stations for cellphones and other electronic doodads, and independent front and rear air conditioning controls. For the driver (or owner/operator, if you prefer), standard navigation and a rear-view camera, not to mention sliding rear passenger doors and some allegedly hefty luggage space, may or may not, keep him or her from missing the ubiquitous Crown Vics of yore.
In any case, it remains unclear if the NV200 will return in its original (in 2013) S Cargo and SV (passenger) form, though if the taxi gig doesn’t work out, the end of the line for this shrinking violet may be assured.
Whatever, look for a variable-valve-timed (VVT) 2.0-liter inline 4-cylinder (I4) engine to be the only power choice, lineup-wide, and it should remain under the management of a standard continuously variable transmission (CVT). Look for a paltry 131 hp and 139 lb-ft of torque from this front-wheel-drive-only (FWD) hack, with mileage figures estimated at an urban-friendly 24 mpg city/25 highway.
Alas, one of the downsides in the taxi version of the NV200 is a projected lack of oomph from its less potent (compared to the Crown Vic) powertrain, along with the dubious staying power of the added creature comforts, at least according to a number of media sources.
Expect, finally, the 2014 NV200 taxi to come equipped with such standard safety features as 4-wheel antilock brakes (ABS), traction and stability control, front side-mounted airbags, front and rear head airbags, and daytime running lights.
Right now my 12v turns off when the car is turned off. I would like it to be on all the time. how do I do this?
Air Conditioning
Single front air conditioning zones
Airbags
Dual front airbags · Front side airbags · Front side curtain airbags
Audio System
Antenna Type: mast · Auxiliary audio input: iPod/iPhone integration · Single disc in-Dash CD · AM/FM radio · Total Number of Speakers: 2
Brakes
ABS: 4-wheel · Front brake diameter: 11.1 · Front brake width: 1.1 · Front brakes: ventilated disc · Rear brake diameter: 9.0 · Rear brakes: drum
Comfort Features
Armrests: drivers seat · Floor Material: rubber
Convenience Features
Center console: front console with storage · Cupholders: front · One-touch windows: 2 · Power outlet(s): 12V front · Reading lights: front · Steering wheel: tilt-adjustable · Storage: in dash
Driver Seat
Adjustable lumbar support: manual · Manual adjustments: 6
Drivetrain
Axle ratio: 5.41
Engine
Alternator: 110 amps · Battery: heavy duty
Exterior Features
Door handle color: black · Front bumper color: black · Grille color: grey · Mirror color: black · Rear bumper color: black · Rear trunk/liftgate: barn · Side door type: dual manual sliding · Window trim: black
Headrests
Front headrests: adjustable · Number of front headrests: 2
Instrumentation
Warnings and reminders: low fuel level
Lights
Headlights: Halogen
Mirrors
Exterior mirrors: manual · Inside rearview mirror: manual day/night
Passenger Seat
Manual Adjustments: 4
Roof
OEM roof height: undefined
Safety
Crumple zones: front
Seatbelts
Emergency locking retractors: front · Front seatbelts: 3-point · Seatbelt force limiters: front · Seatbelt pretensioners: front · Seatbelt warning sensor: driver and passenger
Seats
Driver seat manual adjustments: height · Front seat type: bucket · Passenger seat folding: folds flat · Upholstery: cloth
Spare Tire
Mount Location: underbody
Spare Wheel
Rim Type: steel
Steering
Steering ratio: 18.3 · Turns lock-to-lock: 3.3
Suspension
Front Arm Type: lower control arms · Front Shock Type: twin-tube gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Shock Type: twin-tube gas shock absorbers · Rear Spring Type: leaf springs · Rear Suspension Classification: solid axle · Rear Suspension Type: multi-leaf · Stabilizer bar(s): front
Tires
Type: all season
Tires and Rims
Spare tire size: full-size matching · Wheels: steel
Windows
Front wipers: variable intermittent
Air Conditioning
Single front air conditioning zones
Airbags
Dual front airbags · Front side airbags · Front side curtain airbags
Audio System
Antenna Type: mast · Auxiliary audio input: jack · Single disc in-Dash CD · AM/FM radio · Total Number of Speakers: 2
Brakes
ABS: 4-wheel · Front brake diameter: 11.1 · Front brake width: 1.1 · Front brakes: ventilated disc · Rear brake diameter: 9.0 · Rear brakes: drum
Comfort Features
Armrests: drivers seat · Floor Material: rubber
Convenience Features
Center console: front console with storage · Cupholders: front · Multi-function remote: keyless entry · One-touch windows: 2 · Power outlet(s): two 12V front · Reading lights: front · Steering wheel: tilt-adjustable · Steering wheel mounted controls: cruise controls · Storage: in dash
Driver Seat
Adjustable lumbar support: manual · Manual adjustments: 6
Drivetrain
Axle ratio: 5.41
Engine
Alternator: 110 amps · Battery: heavy duty
Exterior Features
Door handle color: black · Front bumper color: black · Grille color: grey · Mirror color: black · Rear bumper color: black · Rear trunk/liftgate: barn · Side door type: dual manual sliding · Window trim: black
Headrests
Front headrests: adjustable · Number of front headrests: 2
Instrumentation
Warnings and reminders: low fuel level
Lights
Headlights: Halogen
Mirrors
Exterior mirrors: heated · Inside rearview mirror: manual day/night
Passenger Seat
Manual Adjustments: 4
Roof
OEM roof height: undefined
Safety
Crumple zones: front
Seatbelts
Emergency locking retractors: front · Front seatbelts: 3-point · Seatbelt force limiters: front · Seatbelt pretensioners: front · Seatbelt warning sensor: driver and passenger
Seats
Driver seat manual adjustments: height · Front seat type: bucket · Passenger seat folding: folds flat · Upholstery: cloth
Spare Tire
Mount Location: underbody
Spare Wheel
Rim Type: steel
Steering
Steering ratio: 18.3 · Turns lock-to-lock: 3.3
Suspension
Front Arm Type: lower control arms · Front Shock Type: twin-tube gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Shock Type: twin-tube gas shock absorbers · Rear Spring Type: leaf springs · Rear Suspension Classification: solid axle · Rear Suspension Type: multi-leaf · Stabilizer bar(s): front
Tires
Type: all season
Tires and Rims
Spare tire size: full-size matching · Wheels: steel
Windows
Front wipers: variable intermittent
Air Conditioning
Single front air conditioning zones · Rear air conditioning: with independent controls · Single rear air conditioning zones
Airbags
Dual front airbags · Passenger airbag deactivation: occupant sensing deactivation · Front side airbags · Rear side curtain airbags
Audio System
Antenna Type: diversity · USB auxiliary audio input · Single disc in-Dash CD · Touch screen display radio · Satellite Radio: SiriusXM · Total Number of Speakers: 2
Brakes
ABS: 4-wheel · Front brake diameter: 11.1 · Front brakes: ventilated disc · Rear brake diameter: 9.0 · Rear brakes: drum
Comfort Features
Armrests: drivers seat · Floor Mat Material: vinyl/rubber · Floor Mats: front
Convenience Features
Assist handle: rear · Cupholders: front · One-touch windows: 2 · Power outlet(s): 12V front · Reading lights: front · Rear power outlet: 12V · Steering wheel: tilt-adjustable · Steering wheel mounted controls: cruise controls · Storage: door pockets
Driver Seat
Adjustable lumbar support: manual · Manual adjustments: 6
Engine
Alternator: 150 amps
Exterior Features
Door handle color: black · Front bumper color: body-color · Grille color: body-color · Mirror color: black · Rear bumper color: black · Rear trunk/liftgate: barn · Side door type: dual manual sliding
Headrests
Front headrests: adjustable · Number of front headrests: 2 · Number of rear headrests: 3
In Car Entertainment
Infotainment screen size: 5.8 in.
Instrumentation
Fuel economy display: MPG
Lights
Headlights: Halogen
Mirrors
Exterior mirrors: power · Inside rearview mirror: manual day/night
Passenger Seat
Manual Adjustments: 4
Rear Seats
Type: bench
Roof
Moonroof: sliding sunshade · OEM roof height: undefined · Sunroof: panoramic
Safety
Camera system: rearview · Rearview monitor: in dash
Seatbelts
Emergency locking retractors: front · Front seatbelts: 3-point · Seatbelt force limiters: front · Seatbelt pretensioners: front · Seatbelt warning sensor: driver and passenger · Second row seatbelts: 3-point
Seats
Driver seat manual adjustments: height · Front seat type: bucket · Passenger seat folding: folds flat · Passenger seat manual adjustments: reclining · Upholstery: vinyl
Suspension
Front Arm Type: lower control arms · Front Shock Type: twin-tube gas shock absorbers · Front Spring Type: coil springs · Front Suspension Classification: independent · Front Suspension Type: MacPherson struts · Rear Shock Type: twin-tube gas shock absorbers · Rear Spring Type: leaf springs · Rear Suspension Classification: solid axle · Rear Suspension Type: multi-leaf · Stabilizer bar(s): front
Telematics
Navigation system: touch screen display · Phone wireless data link: Bluetooth · Smart device app function: send destination to vehicle
Tires and Rims
Wheel type: aluminum alloy
Windows
Front wipers: variable intermittent · Power windows: front · Rear wiper: with washer