put a screw on wire connector like the stock one . also some marine goop. the mistake i made when i bypassed the switch was , i used a barrel connector. this time i used some metal staples to secure wires together to alleviate some stress, along with some additional wire ties. tested it out, and we are ready to go. i also bought i new dip tube from the local pet supply store . i cut it to about 14 " . 4 - 5 " deep into kayak and about 9 '" height inside tank . this will give me good support into kayak to prevent tank from moving and a nice high water level to support 30 ragging macs slashing about in tank.
thx everyone for help and suggestions.