Radio does not work after I replaced the ignition switch on my 1995 pathfinder, help please.

The linked video is for the 1996 Pathfinder .... I think Nissan changed the fuse map layout for your 1995. Regardless, you look for the 7.5amp fuse labelled "Turn Signal"
HOWEVER ... the wiring of the turn signal on this car is shared by the hazard warning light switch wiring. So if your turn signal does not work but your hazards do ... it could be something other than just the 7.5a fuse ... the part of the hazard switch that is shared with the turn signal wiring could be bad ... which kills your turn signal but lets the hazards work. Also ... if the fuse is good and the hazard switch is good then it could be a wonky combination switch (turn signal switch) off the steering column.

Your first problem is no power to the coil/s. This could be the ignition switch or wiring from there to the coils. With ignition on, you should have 12 volts to the coil/s. The ECM grounds it out with help from the crank sensor. If you turn the ignition switch on and have the dash gauges and hear relays kick in, then check for bad/broken wires. Several things come on while in the run position. Like radio, blower fan, lights/gauges in the dash. If they don't come on, first would be checking the switch, then wires. You need a volt ohm meter, electrical shcematics.

My bet is the ignition switch itself or the connector on the switch is bad.
You say things seem to work when you move the wires. This is classic indication that the switch is bad.
Let us know if this fixes the problem. Robert

colors listed below. please let me know if you have more questions.

1995 Nissan Pathfinder Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ (HOT) Wire: Pink
Car Radio Switched 12V+ Wire: Blue
Car Radio Ground Wire: Gray
Car Radio Illumination Wire: Red/Blue
Car Radio Dimmer Wire: Red/Yellow
Car Radio Antenna Trigger: N/A
Car Radio Amp Trigger Wire: N/A
Front Speakers Size: 5? x 7?
Front Speakers Location: Doors
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Blue
Right Front Speaker Wire (+): White
Right Front Speaker Wire (-): Black
Rear Speakers Size: 5? x 7?
Rear Speakers Location: Roof Mount
Left Rear Speaker Wire (+): Light Green
Left Rear Speaker Wire (-): Purple
Right Rear Speaker Wire (+): Blue
Right Rear Speaker Wire (-): Pink

It is possible that it could be a fuse. Fuses are usually located under dash driver side, or under the hood. HOWEVER, if the fuse is not blown, and all windows and locks don't work you should look into replacing the master switch in your drivers door. The switch in the drivers door controls the other locks and windows so when this switch becomes defective it will affect the other switches as well.

1995 Nissan Pathfinder Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ Wire: Pink
Car Radio Switched 12V+ Wire: Blue
Car Radio Ground Wire: Gray
Car Radio Illumination Wire: Red/Blue
Car Radio Dimmer Wire: Red/Yellow
Car Radio Antenna Trigger: N/A
Car Radio Amp Trigger Wire: N/A
Front Speakers Size: 5′ x 7′
Front Speakers Location: Doors
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Blue
Right Front Speaker Wire (+): White
Right Front Speaker Wire (-): Black
Rear Speakers Size: 5′ x 7′
Rear Speakers Location: Roof Mount
Left Rear Speaker Wire (+): Light Green
Left Rear Speaker Wire (-): Purple
Right Rear Speaker Wire (+): Blue
Right Rear Speaker Wire (-): Pink

If its just the lights, then probably the headlight switch. If radio problem is related then possibly a bad ignition switch.

I had the same problem with my 95 finder, it it probly the dimmer switch on the dash shorted out, it cost me 220 bucks to have my mechanic figure that out

http://www.onlinefreeebooks.net/automotive-machinery-power-equipment-ebooks/nissan/1994-nissan-truck-and-pathfinder-workshop-manual-pdf.html

I assume you didn't install the radio yourself then? Some installers put a inline fuse in. This would be located behind the radio. Some radios even have a fuse built into themselves, also on back side of radio. If those two solutions don't help ya, check the other fuses. Maybe the wiring for the radio was hooked into a different system other then the radio.