Can anyone tell me if thosnis correct? Ive installed a 05 5.3 into my 1998 k1500 using a BP harness(stand alone) and thinned down factory harness, gm pcm contrling it all. Ive looked eveywhere and lt1swap.com has the c4-18 "ignition positive voltage" listed to power the pcm? Bp instructions say to tie into 12 volt keyed crank/run circuit, i already have 12v constant, can i use the recommended circuit? Where do you all get the keyed power cranking/running? Tia!