Hi SXOC

I installed a wideband today, when using my multi meter to find a ign wire to use for it, I accidentally had the multimeter set without the fuse so I shorted a circuit, the radio circuit 10amp fuse and 'elec parts' 7.5amp fuses replaced and all other fuses checked still nothing, although I've checked the wires at the radio and turbo timer and they're getting 12v and I've also checked the earths for continuity which is good.
Im not very electrically minded so would appreciate the help a lot.

Thanks