There are four basic styles of brake controllers. The first style is a timing activated brake controller. This control works with your brake switch to activate the trailer brakes at a predetermined amperage output. It can be mounted from anywhere and generally will be used for a short hauls, or a low weight capacity trailer.
Trinidad was incorporated in 1870 as a City of the State of California, USA. Trinidad resident Henry A. Boyes was a First Sergeant with the Fifth Marines in World War II; his service was described by Eugene Sledge in the book, With the Old Breed: At Peleliu and Okinawa.
A good map of Trinidad and Tobago is located on the website for the travel guide, Discover Trinidad and Tobago.. The website offers full island maps, plus detailed maps of specific cities and regions, such as San Fernando and Central Trinidad.