I think I blew a fuse in my 2000 Toyota Corolla

the tail light issue could be just bad bulbs, check them with a meter ,, also, check the sockets for power to each contact point,, normally if the brake lights and flashers are working, the tail lights should too,, as far as the dash lights have you installed an after market stereo? If so a common problem is a wrong wire got grounded,The harness from the car to the factory radio has a wire for the dash lights that shows up as ground with the light off. When the lights are on the wire is 12V+. Check to see if you connected the ground from the new stereo to this wire. The radio will work perfect but everytime you turn thr park light on the fuse will blow...and the radio will continue to work. There should be a ground wire in the harness as well, ensure you connect the ground from the new stereo to this wire. there is a 15 amp fuse that blows, check them with a meter rather than by sight

The Toyota Corolla has been around long enough that many owners find themselves needing to replace the factory stereo. Installing a new stereo in the Toyota Corolla gives improved sound and updated features. Swapping out the stereo in the Toyota Corolla takes basic tools and less than an hour. This article covers models from 1990 to 2000.

Open the hood and remove the negative battery cable from the terminal. Apply the parking brake and place the car in "D."

> Remove the trim from around the stereo by prying with your fingers at one corner. Some early models have two screws at the top of the trim piece to remove first. Allow the trim to hang on the drivers side of the dash if it's connected to the cigarette lighter.

> Locate and remove the four screws holding the stereo in place. Pull the radio out of the dash and disconnect the wires from the back of the head unit.

To install

> Connect the wiring harness adaptor to the original harness and let it hang from the dash. Slide the new stereo into the Toyota radio mounting kit, which is a thin metal cover and secure it per the manufacturer's instructions. Most adaptors have screws to hold the stereo in place, however some have clips, which engage automatically.
>Plug the wiring harness adaptor and antenna wire into the back of the new head unit and push the entire assembly into the dash. Reconnect the negative battery cable and turn the radio on.

> Ensure all of the stereo controls and speakers are working. Secure the radio in the dash with the original four screws and replace the trim.

You have a wire crossed.....Use a little light tester to trace the power wires u used. Hope this helps u out.

I would get a stereo installation kit for your car from Auto Zone or a local car audio store. It will have the surround for the new stereo to fit where the old one was and a harness that you can wire the new stereo to and the harness will have a plug to match the stock radio plug.

Unfortunately he probably fried the wires or blew all the fuses. You can also check the fuse box because i bet most of the fuses blew. You can probably replace the fuses and get a few it not all of the lost functions to work. If not you will probably need to have the car towed to a shop have have them put a new wiring harness in the car.

go to a radio store or walkmart on auto movil have a wire plug for every radio anc cars and model you connet the plug to radio and plug in to the car radio plug ant that it

which fuse did you check. verify the wiring to the radio than comes from the light switch to the radio. if all this worked before , then it has to be work that you have done. the only link from the light switch to the radio is for inst panel dimming. first disconnect that wire and ck fuse for tail lights. make sure there is power on both sides of the fuse, use a test light.

first check the illumation fuse which to toyota its the panel fuse, check if it is blown. if not take the aftermarket wire harness u wired in with the radio harness and disconnect the orange wire (illumation wire) and see if u have lights again. sometimes the aftermarket orange wire won't work with toyota vehicles. good luck

did u know that they make a harness for your car that plugs into your factory harness and then adapts to your aftermarket radio? for the lights, you have blown the interior light fuse, it may be the same fuse as the cigar lighter.Below is your radio wire colors and what they do.
1990 Toyota Corolla Car Stereo Radio Wiring Diagram.
Radio Constant 12V+ Wire: Blue/Yellow
Radio Switched 12V+ Wire: Gray
Radio Ground Wire: Brown
Radio Illumination Wire: Green
Radio Dimmer Wire: N/A
Radio Antenna Trigger Wire: N/A
Radio Amp Trigger Wire: N/A
Front Speakers Size: 4′
Front Speakers Location: Dash
Left Front Speaker Wire (+): Pink
Left Front Speaker Wire (-): Purple
Right Front Speaker Wire (+): Purple
Right Front Speaker Wire (-): Light Green
Rear Speakers Size: 4′
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Black
Left Rear Speaker Wire (-): Yellow
Right Rear Speaker Wire (+): Red
Right Rear Speaker Wire (-): White
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If you go to a stereo installation place, or some auto supply places carry them now too, you should be able to get a plug-in adapter, to go from one to the other & save yourself a nightmare. If not, do you have basic wiring experience & a test light 12VDC?