Ok....well i dont exactly know why my equalizer isnt turning on......

Has it ever worked before? If not,this could be a basic install issue. To bench test, combine red and yellow and run to 12V positive and Black to 12V negative to see if it powers up.

The red wire from the stereo is 12v signal, basically when you turn the key on it send 12v to the red wire to make your stereo come on. Everything else is fine since you can insert and eject cds. You may have pulled the signal wire loose when you changed the ignition switch, check the wires behind the radio and the wires to the ignition switch.

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The Yellow is your Ignition wire, It controls the stereo power when the vehicle is on/off. It can be spliced with the red wire, however I wouldn't suggest it unless all other options have been used.

the red wire needs to be connected directly to the battery postive/red lead. you may have to run a wire from the battery, through a hole drilled in the firewall, into the red lead on the back of the stereo. it is suggested that you use a fuse, but is not necessary, as close to the battery as possible.

do you have power going to both the yellow and red wires????????
yellow is constant power and red is switched power (ignition).

most likely an internal problem but check the wires first, the yellow off the radio should be the 12 v ignition and the red should be the 12v constant, black ground of course, also if you had wires you didnt need to hook up make sure they aren't by accident

That stereo is now most likely dead. speaker wires are mostly green/black stripe, white/b s, grey/b s and violet/b s. ground is black and power are red and yellow.

You are correct on checking the sterio, just 12+ and ground to see if it powers up. Fuse 25, in your fuse box should be numbered. If not, just pull them one at a time to see which one got fried.

just run both red and yellow to 12v ...

well put the red on a constant 12v source then
yellow you need to put on a 12v source that comes on and off with key ..

yellow wire can go to the fuse box and take a non-using fuse out and put wire in it and should have power .. ..

i would recommend to locate the cars original wires tho ..

i am no pro iam just an average joe but i kno from installing stereos in many many cars .. ive done hack jobs to comp ..

hope this may help you

You did not specify if you wanted the wiring diagram for the Expedition or the Explorer, so I got you both. Good Luck

1998 Ford Expedition Stereo Wiring
Constant 12V+ White/Purple Switched 12V+ Black/Pink Ground Black/Green Illumination Blue/Black Dimmer n/a Amplifier Remote Blue Antenna Right Front Front Speakers 6" x 8" Doors Left Front (+) Light Blue/White Left Front (-) Orange/Light Green Right Front (+) Dark Green/Orange Right Front (-) White/Light Green Rear Speakers 6" x 8" Rear Doors Left Rear (+) Tan/Yellow Left Rear (-) Gray/Light Blue Right Rear (+) Brown/Pink Right Rear (-) Orange/Red
1998 Ford Explorer Stereo Wiring Constant 12V+ Light Green Switched 12V+ Yellow/Black Ground Black Illumination Light Blue/Red Dimmer n/a Antenna Trigger Orange/Blue Antenna Right Front Front Speakers 5" x 7" Doors Left Front (+) Orange/Light Green Left Front (-) Light Blue/White Right Front (+) Dark Green/Orange Right Front (-) White/Light Green Rear Speakers 5" x 7" Rear Door Left Rear (+) Gray/Light Blue Left Rear (-) Tan/Yellow Right Rear (+) Orange/Red Right Rear (-) Brown/Pink