sorry for late response .... as u know weekend for a married man is definitely not for him..lol
soo here r the pics
u dont have to connect to all the doors.. under the dash fuse box has som sockets also.. open the fuse lid and u will find four connectors/ sockets... among them on the right side of blue socket just behind the thick black cable is the dome light socked.. it only has two wires... one is -ve n other is +ve.
u dont have to peel the wires ..just cut the legs of spare led and sold the wire and push it to the socked see the first pic.
these r the parts u may use... and the last pic has the complete circuit ....
these are the simple cable connector from scrap computer... insert the led n bend it towards the foot well area and tie it/ hide ti to the place below the glove box and below the steering .i hope u have the basic knowledge abt resistor and led.
leds are polarity sensitive
resistor is used on +ve terminal otherwise led will burn out within seconds.
my suggestion is do not use leds which have a focus area (in the pic it is on the left hand side) otherwise light will not disperse.
if u need any thing just ask...