I need electrical plan for pluging my radio ,for toyota echo 2005

If you are attempting to install an aftermarket radio Don't butcher the plugs on your Toyota ... simply go to a car stereo shop and buy an adapter plug for $10-$20 then wire it to your new radio ... then just plug them together (the wires on the adapter are marked) You'll likely need a dash kit too ... save yourself from a lot of frustration time and money! ....

I think this is what you're looking for; info courtesy of Bulldog Security

vehicle MODEL YEAR(S) ECHO 2005 -2006 KEY T-HARNESS IMMOBILIZER TOY KEY-1 TOY-4 N/A PART COLOR LOCATION 12 VOLT CONSTANT WHITE/BLUE (+) IGNITION SWITCH HARNESS STARTER BLACK (+) IGNITION SWITCH HARNESS STARTER 2 N/A IGNITION 1 BLACK/RED (+) IGNITION SWITCH HARNESS IGNITION 2 BLACK/YELLOW (+) IGNITION SWITCH HARNESS IGNITION 3 N/A ACCESSORY/HEATER BLOWER 1 WHITE/BLUE (+) IGNITION SWITCH HARNESS ACCESSORY/HEATER BLOWER 2 N/A KEYSENSE YELLOW (-) IGNITION SWITCH HARNESS PARKING LIGHTS ( - ) N/A PARKING LIGHTS ( + ) GREEN (+) @ TOP of FUSEBOX, 9-PIN PLUG POWER LOCK BLACK/RED to BROWN/YELLOW (TYPE B) See NOTE *1 @ 14-PIN PLUG, DRIVER KICK PANEL POWER UNLOCK BLUE/YELLOW to YELLOW/BLACK (TYPE B) (Requires Double Pulse) @ 14-PIN PLUG, DRIVER KICK PANEL DOOR TRIGGER RED/WHITE (-) @ TOP OF FUSEBOX, 9-PIN PLUG DOMELIGHT SUPERVISION USE DOOR TRIGGER, Requires Part #775 Relay TRUNK RELEASE N/A SLIDING POWER DOOR N/A HORN WHITE/RED (-) @ STEERING COLUMN HARNESS TACH BLACK (-) @ DATA LINK CONNECTOR, BELOW FUSEBOX, PIN 9 WAIT TO START LIGHT N/A BRAKE GREEN/WHITE (+) @ SWITCH ABOVE BRAKE PEDAL FACTORY ALARM DISARM DISARMS with KEYSENSE wire @ IGNITION SWITCH HARNESS ANTI-THEFT N/A EXTRA INFORMATION NOTE *1 the LOCK and UNLOCK wires will only meter while turning the key in the DRIVERS DOOR KEY CYLINDER.