Instant fuse pop

Soon as I put the fuse in it pops instantly... couple years ago a new horn stalk was fitted and iv fitted a new interior light...iv read up that it can be a wire linked to you side light? All my lights work everything apart from the horn and interior...saying the for some reason my dipped and full beam seem to be opposite to what the stall says lol

If the fuse blows as soon as you put it in, there must be a short circuit in the wiring.

Col

Sound like it’s going to be a long day... thanks

Nothing more to be said really, as stated above you have a short circuit.

Ive found short circuits on large trailers by bypassing the fuse and waiting for the smoke to appear! aounds mad but it worked many times.

Posh way is to rmeove the fuse and fit a headlamp bulb into the two fuse slots turn ignition on bulb will light, then start playing with the wires and unpluggings stuff until the light goes out and you will be on the right tracks.

Like the bulb idea but I’m not sure about the smoking one haha