Abstract: A combination ground and power source circuit tester device includes a cylindrical plug with a cone-shaped end that fits into a vehicle accessory receptacle. An attached body member engages the plug and retains first and second radially extending contacts that function to provide a connection with conductive studs that attach to leads to a circuit. A light bulb indicating that the circuitry is powered is retained in the body member and in a parallel circuit with the contacts.

Abstract: A sewage septic tank system including a septic tank for receiving sewage discharge, a liquid junction box operatively connected to receive liquid discharge from the septic tank, at least one, and preferably a plurality of drainage lines opening into the liquid junction box for discharge and draining of liquid therefrom to a drain field and the like, and levelling caps having eccentrically disposed face openings therein, the caps being adjustably mounted on the liquid inlet ends of the drainage lines whereby the openings can be adjusted to provide for varied and different liquid levels in the junction box, and for controllable substantially even distribution of liquid into the drainage lines.