5.25 inch
The 1989 Toyota Corolla Weygand rear speakers can be found in the side compartments of the rear of the vehicle. There will be a speaker on each side.
The stock speakers in a 1993 Toyota Corolla measure 4 inches in the front and 6 1/2 inches in the rear. The front speakers are located in the dash, and the rear speakers are located in the rear deck.
For the 1997 Toyota Corolla, the left front speaker wire + is pink. The left front speaker wire - is purple. The right front speaker wire + is light green, and the right front - is blue. The left rear + is black and the left rear - is yellow. The right rear + is red and the right rear - is white.
With a screwdriver
Stock is a 6 inch ROUND speaker. I took mine to a speaker store and they sold me 6x9's so I had to do some cutting.
The front factory speaker is a 5 1/4". The steel should be scored from the factory to allow for 6" to 6 1/2" aftermarket speaker if you want to cut the hole out. The rear also has a 5 1/4" stock speaker. The mods for getting a 6 1/2 or 6x9 is a little more involved than the front.
In a 1994 Corolla, the radio battery constant 12v+ wire is blue/yellow, the radio accessory switched 12v+ wire is gray, the ground wire is brown, and the illumination wire is green. For the front speakers, the left front speaker wire (+) is pink, the left front speaker wire (-) is violet, the right front speaker wire (+) is light green, and the right front speaker wire (-) is blue. For the rear speakers, the left rear speaker wire (+) is black, the left rear speaker wire (-) is yellow, the right rear speaker wire (+) is red, and the right rear speaker wire (-) is white.
the stock speakers are 5by7 then 6by8
6.5 inch
6.5
6.5 fron and rear
Front are 4x6 Rear 6.5