ive had an issue with 1 of my running lights always popping my trailer light fuse in my truck so i just cut the wire and rolled without it

...so i decided 2 re-wire my whole trailer...well was working ok all except that one light again.

so it popped the fuse again and i replaced it..now i cant plug in ...any... of my running lights without it popping the damn fuse..any ideas??? or solutions?
mite there be something grounded out ? or maybe is there 2 many lights? 2 yellow front of wheels ,2 red on back of wheel ,2 break/stop/tail and 3 bar type running..,
thanks in advance 4 any help...