You must change the Transmission Fluid as you do it or the oil will leak out the hole the sensor goes in. Its held in by one 10mm bolt on the passenger side of the transmission, next to the ladder frame.
Drain the fluid, unbolt it, pry it out with a screwdriver, reconnect the new one, bolt it in, and fill the fluid, 2.1 qts i believe.
The 2011 Mazda MX-5-Miata has a 5-speed manual.
The 2004 Mazda MX-5-Miata has a 5-speed manual.
The 2012 Mazda MX-5-Miata has a 5-speed manual.
The 2009 Mazda MX-5-Miata has a 5-speed manual.
The 2005 Mazda MX-5-Miata has a 5-speed manual.
The 2014 Mazda MX-5-Miata has a 5-speed manual.
The 2007 Mazda MX-5-Miata has a 5-speed manual.
The 2013 Mazda MX-5-Miata has a 5-speed manual.
The 2001 Mazda MX-5-Miata has a 5-speed manual.
The 2008 Mazda MX-5-Miata has a 5-speed manual.
The 2002 Mazda MX-5-Miata has a 5-speed manual.
The 2010 Mazda MX-5-Miata has a 5-speed manual.