WHILE EN ROUTE ON A CROSS COUNTRY FLIGHT, THE AIRCRAFT ELECTRICAL SYSTEM FAILED. AS A RESULT, WHEN THE PILOT PUT THE LANDING GEAR DOWN HE HAD NO GEAR LIGHTS. HE STATED THAT THE MANUAL SYSTEM APPEARED TO BE IN THE PROPER POSITION FOR THE GEAR TO BE DOWN AND LOCKED, BUT DURING LANDING ROLL, HE HAD DIFFICULTY IN MAINTAINING DIRECTIONAL CONTROL AND THE LANDING GEAR COLLAPSED.