A long shot, You have a wire going up to the third brake light in the trunk
lid. Check the condition of the wire in the left hinge.

¢


"Mazda99" > wrote in message
ups.com...
> As far as I know, this is the original horn. I bought my Miata used
> and there were no other customizations, so I'd expect it's the original
> horn. As there are other things on this circuit, it may not be the
> horn.
>
> I've been trying to find the conditions that make it blow. I've put a
> new fuse in the morning, driven the car to work and everything is fine.
> Once I come out in the heat of the day, it's still fine until I drive
> it for the first time (for only a few minutes)- after which it's blown
> again. Don't know yet if this is a pattern or not, just what I
> discovered today.
>
> Keep the clues coming. I'll be going hard at trying to find the short
> this weekend and any list of best places to start would be appreciated.
> I also don't have a wiring diagram for this, unfortunately - does
> anyone have a diagram of this circuit?
>
> Thanks,
>
> John
>
>
> Natman wrote:
>> On 11 Jul 2006 19:31:24 -0700, "Mazda99" > wrote:
>>
>> >I have a 1999 Miata MX5 that recently has started to have the 15 amp
>> >fuse that serves the horn and brake lights (and I'm sure a few more
>> >things) blow occassionally. As this is intermittent, I'm struggling on
>> >where to start looking. Anyone had a similar problem and can give me a
>> >clue as to where to start looking for the problem?? Any help would be
>> >greatly appreciated.
>> >
>> >Thanks!
>>
>> Are you using the stock horn? It is not uncommon for air horns to blow
>> the 15 amp fuse.
>