Electrical connector i'm in need of theconnector to the stereo and i can't seem to find one or the right diagram can some one tell me where i could find one?

Impossible to tell without knowing what fuse number is blowing, along with some basic electrical troubleshooting.
Common suspects include:
altered factory stereo
Aftermarket alarm system
chafed wiring
defective instrument lamp
defective instrument panel

go under the car find the sensor located on the side of the transmission, ,plug connector has to come off, use a socket, if that seems like it wont work go to a parts store ad get a senor socket for your car , now retry .

sorry (just 1 wire or the whole car burned to ground, ?)
the question is????
answer, replace them.
or ask any electric shop to do it. any can, tell them you want heat shink job. if the connectors burned up. then??? bad news.
no photos, no joy, damage has no limits, only EYES work.

Here is a list of radio wiring harness wire color codes and what they do. I have given both with and W/O Bose.

Nissan Maxima Car Stereo Radio Wiring Diagram Radio Constant 12V+ Wire: Pink/Blue
Radio Ignition Switched 12V+ Wire: Blue/Black
Radio Ground Wire: Vehicle Chassis
Radio Illumination Wire: Red/Blue
Radio Dimmer Wire: Red/Orange
Radio Antenna Trigger Wire: Black/Red
Front Speakers Location: Doors
Left Front Speaker Wire (+): Blue/White
Left Front Speaker Wire (-): Blue/Yellow
Right Front Speaker Wire (+): Brown
Right Front Speaker Wire (-): Brown/White
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Red
Left Rear Speaker Wire (-): Green
Right Rear Speaker Wire (+): Blue
Right Rear Speaker Wire (-): Pink
1997 Nissan Maxima with Bose Stereo Wiring Diagram W/Bose
Car Radio Battery Constant 12v+ Wire: Pink/Blue
Car Radio Accessory Switched 12v+ Wire: Blue
Car Radio Ground Wire: Chassis
Car Radio Illumination Wire: Red/Blue
Car Stereo Dimmer Wire: Red/Yellow
Car Stereo Antenna Trigger Wire: Black/Red
Car Stereo Amp Trigger Wire: Green/White
Car Stereo Amplifier Location: Each speaker has its own amplifier located at each speaker.
Left Front Speaker Positive Wire (+): Yellow
Left Front Speaker Negative Wire (-): Brown
Right Front Speaker Positive Wire (+): Violet
Right Front Speaker Negative Wire (-): Light Green
Left Rear Speaker Positive Wire (+): Red
Left Rear Speaker Negative Wire (-): Green
Right Rear Speaker Positive Wire (+): Pink
Right Rear Speaker Negative Wire (-): Blue

Did you buy a connector to plug the radio directly into the truck harness. You shouldn't need to know the wiring in the truck, since the aftermarket connector does the truck side for you. wire the connector into the radio then just plug it right in. The connector's wires will have words written on each on to tell you which wire it connects to on your radio. You can pick one of these plugs up from your local Walmart for under $10 in the stereo department.

Yellow: Constant +12VDC (memory)
Red: key-switched +12VDC (accessory)
Black: Ground
Blue/white: amp remote or power antenna output

Speaker wires: The solid-color wire of each pair is positive; the black-striped wire is negative.

Left front: white
Right front: gray
Left rear: green
Right rear: violet

Yep!
Here you go...
1995 Mercury Villager Car Stereo Radio Wiring Diagram
Radio Constant 12V+ Wire: Green/Purple
Radio Ignition Switched 12V+ Wire: Yellow/Black
Radio Ground Wire: Black/Light Green
Radio Illumination Wire: Green
Radio Dimmer Wire: N/A
Radio Antenna Trigger Wire: N/A
Radio Amplifier Trigger Wire: N/A
Front Speakers Size: 5′ x 7′
Front Speakers Location: Doors
Left Front Speaker Wire (+): Orange/Light Green
Left Front Speaker Wire (-): Light Blue/White
Right Front Speaker Wire (+): White/Light Green
Right Front Speaker Wire (-): Dark Green/Orange
Rear Speakers Size: 5′ x 7′
Rear Speakers Location: Side Panels
Left Rear Speaker Wire (+): Light Brown/White
Left Rear Speaker Wire (-): Light Brown/Yellow
Right Rear Speaker Wire (+): Light Brown/Green
Right Rear Speaker Wire (-): Brown/Pink

That's what they show for factory
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1992 Saturn SL2 Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ Wire: Orange
Car Radio Ignition Switched 12V+ Wire: Yellow
Car Radio Ground Wire: Black
Car Stereo Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amplifier Trigger Wire: N/A
Front Speakers Size: 6 1/2′
Front Speakers Location: Doors
Left Front Speaker Wire (+): Tan
Left Front Speaker Wire (-): Gray
Right Front Speaker Wire (+): Light Green
Right Front Speaker Wire (-): Dark Green
Rear Speakers Size: 6 1/2′
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Brown
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Dark Blue
Right Rear Speaker Wire (-): Light Blue

It seems like the speaker jack tip needs cleaning, or the contact has become bent away from the connector and needs to be re-aligned.  The Passport is a portable system, so after years of plugging and unplugging the speaker jacks may be worn.  Try using the "Stereo 2" connectors. You can also try cleaning the jack with electrical contact cleaner, and. a cotton swab.