Your Miata after 1-3 weeks may not start due to battery voltage drain.  One of the best ways to guarantee your car is going to start is to disconnect the battery.  Modern cars ECU computer and other components require some minute amount of voltage and will drain the battery in short time.  A good condition disconnected battery can last 6-8 weeks.  When you reconnect the battery, you have a better chance of starting the engine.  The cutoff switch key is removable and can also provide added security.  There is also a provision for tying the key to the mount, so you don’t lose it.  Two keys are included.

The TDR battery disconnect kit comes complete with:

• Battery switch
• Mounting bracket,
• Ground Cable w/ Battry Post
• Threaded Brass Post
• Mounting hardware. 
• Complete instructions

The TDR battery disconnect kit comes complete with battery disconnect switch, mounting bracket, ground cable and  mounting hardware. Installation is simple and only takes a few common shop tools. Works with all 2016 and up ND Miata models. The battery disconnect unit mounts on the front left shock mount location.

 

Click Here for Installation Instructions.