On this page you'll find;
1) How to make a front splitter for an NC Miata with the apearance package.
2) Adding a pair of FIAMM Freeway Blaster horns.
Making a front splitter for the NC Miata;
Baby, our '99 Miata (http://www.cardomain.com/ride/472010) had a nice Track Dog splitter mounted under the front spoiler and I wanted to have one on our new car too. Unfortunately none are available so I had to create one myself. This is what I came up with;
I started by making a cardboard pattern, I used this to locate the mounting holes and to match the shape to the back edge of the factory front spoiler. Once this was done I was able to develop the front edge to my liking, with the profile pretty much matching the profile of the factory spoiler. This was then transfered to the Black textured 3/16" thick ABS sheet material I was using for the splitter. 2x4 foot sheets were used as shipping a full sheet was out of the question and having two halves would make repairs easier too.
At this point in my design I had mounting tabs extending back to existing bolts under the front of the car, on my final version these were removed as I felt they would not allow the spoiler/splitter to flex when I bumped a curb or autocross cone.
With the ABS cut out I fitted the splitter and refined the front profile, a second splitter was made that extended out farther and that is the one that is now mounted on my car.
The pics below show the difference in extension between the two splitters and the reinforcement added under the center where the two halves join, this was done to ensure they stayed in alignment.
I used 6mm screws and nuts to hold the splitter on, though 4mm would do just fine I'm sure. The screws are shown on a piece of the textured ABS sheet used for the splitter. The last pic shows the large splitter on the floor in front of the mounted splitter I kept. This shows the final profile of the rear edge and the mounting holes. The mounting holes were drilled at 3/8" diameter to allow some movement of the splitter when installing it.
So that's it, this was an easy and fun project.
Adding FIAMM Freeway Blaster horns.
I use a pair of FIAMM Freeway Blasters on all of our cars. These are LOUD and have a nice tone that makes you sound like a big ol' Caddy from the sixties.
Use the Hi and Lo tone FIAMM horns in combination, you do not need any additional wiring or relays other than a jumper wire from the + of one horn to the + on the other and probably a ground wire. CarQuest as well as other auto parts stores and big box stores have these under their house brand name but the horns themselves are marked with the FIAMM brand name.
Start by jacking the left front of the car, add a jack stand under the frame and remove the left front wheel. With the wheel out of the way you can easily pull the plastic push pins that hold in the splash panel in front of the wheel, this will expose the open area behind the left front corner of the bumper cover.
Now that you can get in here you'll find the horn wire running up and over the frame to the stock horn, disconnect this wire from the horn and pull it back over the frame to the space behind the foglight, you'll be connecting it to the new horns shortly. You'll notice that there is a good bit of room in here and if you arrange your new horns carefully they'll fit easily. Use both of the metal mounting brackets that were supplied with the horns, forming them into a "V" shape that will have one horn at the end of each leg of the "V". Find a convenient place to mount them, I found a preexisting hole that worked perfectly. The bracket I used was from some other car but the "V" shape can be duplicated with the horn brackets. Bolt them up tight and test fit the horns to be sure there will be no bumping around in there.
Once the location of the horns is set, use one of these double connectors on the + terminal of one horn, connect the car's horn wire to the spade and run a jumper wire from the female side of this connector to the + terminal of the other horn so that both + terminals are now connected in parallel directly to the car's horn wire. Use a female connector on the other end of this jumper wire to connect with the horn. Ground both horns with a wire from the - terminal to a ground point on the frame or body (do not use the same bolt as the horns are mounted with or it will work loose over time).
Give it a test toot and if everything is properly connected and grounded you'll have a nice loud "HONK" rather than a meek little "meep". Done right you will have much improved horns and you will not have cut into the car's factory wiring. A dab of dielectric or even regular ol' axle grease will help to protect the connections for corrosion.
