i have a 97 nissan sentra with the 1.6 and my taillight fuse keeps poping now back where the lights are i see no problems i am wondering if this is a common issue for these cars or not and i am also wanting to know what wire is positive for the tail lights not the break lights and turnsignals thank you in advance

 

does't anyone have a repair manual for there car cause i do not and i am not buying one for my friends car