Most people seem to keep their vehicular fire extinguishers in the
trunk. That's fine if you happen to be in your trunk when a fire breaks
out. If you're in the driver's seat, it would take valuable seconds
to stop the car if necessary, get out of the car, open the trunk, retrieve
the extinguisher, and return to the fire. Fires can move faster than
you can.
I decided to mount a vehicular fire extinguisher where I can reach
it from my seat. In fact, it's right under the front of my seat. Here's
how it got there:
Here is the mount for my small automobile fire extinguisher (a First
Alert 5:B-C model from the local hardware store) on the front of the
driver's seat. On the optional sport seats I have, there's an extendable
thigh support that comes out far enough to provide a very natural space
for an extinguisher.
Installing the bracket was a non-trivial task. There's a convenient
cross-brace that's large enough to hold the bracket, but the mechanical
bits of the seat are right behind the brace. I positioned the fire-extinguisher
bracket where I wanted it, then marked and centerpunched mounting holes.
Before drilling each hole, I slipped a small, thin (0.060") sheet
of stainless steel up behind the cross-brace to protect the components
of the seat.
I used a 13/64" drill to make the mounting holes (you may want
to use a 3/32" or smaller bit to make a starter hole before drilling
the final hole; this will help keep the bit from wandering). To mount
the bracket, I used #10-24 flat-head countersunk stainless-steel bolts
trimmed to 5/8" long. Behind the cross-brace, I used #10 washers
and #10-24 nylon-insert locknuts to provide vibration resistance. These
were a lot easier to use than lockwashers, but even so, installing them
was very difficult. There's hardly any space behind the brace. I finally
gaffer's-taped one washer/locknut set into a short open-end wrench,
which let me get them started and snugged down in one operation.
Please note that these instructions may not be relevant to your car,
even if it seems similar to mine. Always be sure that what you're doing
is safe and correct before you do it.