2004 Rav4...I blew a fuse or fusible link. The car runs fine headlights work. Flashers work. Radio, horn, blinkers etc don't. Any ideas?

If jump starting one hooks up backwards, even just a moment, it is possible to blow a fuse or fusible link, and on some cars even damage the ECU or other components. Check all fuses, then fusible links. Good luck.

You blew a fuse. probably common to all those components. Advisable to run a single wire with inline fuse from your battery to your radio to eliminate this problem in future.

If you made sure your battery connections are tight then you may need trace you hot wire for a bad connection around the fusible links that run from battery.

Have blown fuses or fusible links or melted
bars under fuse & distribution box-- depending
on what the car has

Maybe power got cut going to the headlight switch. I think that would be a fusible link coming right off the battery source and going to the switch. Fusible links were used as power distributors before the era of maxi-fuses and power distribution boxes found in today's cars. Just like fuses, the link is designed to break and stop current flow if power demand is too high, like a short. Sometimes they get old and just give out. When the link goes, the wiring insulation may bubble or melt off some, the link may feel uneven or rough. Fusible links can be cut out and replaced with a similar rated new link. If you have no power to the headlight switch, look for a melted fusible link.

that sounds like there maybe damaged wires or that there is a wiring fault. the new fuse you put in wasn't a bigger fuse then it is meant to have in it is it? cause if so instead of the fuse blowing the wires may melt together and damage parts or catch on fire etc.

How about fusible links. Got a wiring diagram?

Sounds like you blew a main fuse or fusible link on the car. Check the fuse box under the hood.

The horn and the flashers are controlled by the 15 amp HAZ-Horn fuse.
The trunk light is powered by the 20 amp Dome light.
The radio is powered by the above Dome fuse, and the 15 amp Radio & CIG fuse.
With a 12 volt testlight, check for power on BOTH sides of the above fuses. If you have no power to either side of the fuses, you have an open circuit under the hood that feeds said fuses: Look for an open circuit in the main fusible link coming right off of the battery positive terminal to the wiring harness.