wiring help ??

[71_bowtie]

hello, what i'm needing help with is this. have a '78 400 sbc with hei in a '56 chevy 1ton and a '70 chevy pick-up fuse box. aftermarket 4 pin starter switch (bat-acc-ign-start) I can get it started, but then i have to disconect the hei to shut it off. i know the hei needs to be to a switched hot. any help would be awesome, thanks. oh i also read the posts about glass fuel filters-exactly what i have on the '56 and '71 chevy truck projects. i guess i better get em changed. what is the best fuel filter to use? thanks

also have a dietz 112 aftermarket t/s switch with 4 wires (red-black-yellow-blue) Yellow=rt blue=lf i figured that much out. any help on this would be great also thanks again.