The Sun- The Sun as strong 2nd lord gives benefits from the government, gives good eye-sight and also gives a lot of wealth. If the Sun is weak bad eye, separation from family, not much wealth and loss of reputation etc are results. The Sun is immune from maraka effect of 2nd house.
The Moon- The Moon is lord of lagna, so auspicious. The Moon away from the Sun, in conjunction or aspect of benefics i.e. strong is very auspicious. A weak and afflicted moon causes balarista (death in infancy), diseases of the cavities of body like stomach and chest, impure blood, defamation etc.
Mars- Mars lord of 5th and 10th houses is alone a Rajayoga Karaka. Mars in fall (neecha) is also auspicious because it falls in 4th from Aries and 9th from Scorpio.