pls relay 5pins

Hello, i have a 12volt electronic timer with 3digit led. connections: Coin slot, 12volts power, relay connect to TV to turn 'OFF' if no more time. coz i put a timer to my TV. my problem is the Relay of a timer is 5pins, and i think this is not enough for my TV because every month i always change this relay. The time is zero but the TV still 'ON' then i change the relay then it's working good. Please Help, if i change the relay to a bigger one with 8pins, 12volt will this work? if so what particular pins? thanks

5PINS RELAY: 12V=DC 12A 125V 8A 250V 8A 30V=DC 16A 125VAC 50/60hz 8A 277VAC 8A 30VAC S9912 8PINS RELAY: JQX-76F 10A 240VAC 10A 28VDC COIL : DC12V The 5pins relay is the original on the timer. The 8pins that the one i bought from electronics store. the circuit board of the timer using 5pins relay. my questions is what pins of the 8pins relay to connect on the board. which is 5holes only.