I am installing a Hella twin horns on my van

I got a harness with relay from Jay Brown and install everything using the
instruction... easy...

but then when finished the horn didn't work ! !

so...

- I visual check for the fuse -> looking good

- I check for the 12V+ on the stock pos. wire -> nothing

- I visual check for the fuse again -> it looks OK, visually

- I amp. meter check the fuse -> nothing

weird...

- so I take out the fuse (#16) and put in a new one

- I check for the 12V+ on the stock pos. wire  again -> I got 12.5V

and hooraaay ... it's working... I have horn now... ! ! !

so lesson learned....

a good looking fuse doesn't mean a GOOD fuse! ! !... aaargh...

who can imagine that.... aaargh made in China ! ! !

this incident scares the heck out of me...

what will happen if the fuse of the fuel pump  for ex. - or any critical
fuse - is blown but still *"looking good"*?

even a mechanic will spend a day to trouble shoot and throw a lot parts on
it...

next time if you do something with electrical check the fuse... better yet
put in a new one... they are cheap and they wear out too...