where are my main grounds on my 97 f150
i removed my aftermarket radio after i had it inspected it passed all lights worked got home removed aftermarket radio radio every thing was perfect be for removing radio now my turn signal indecator lights when truck is started come on very dim while running they dont blink truck off they blink my 4 wheel drive dont work now it did b4 i took radio out blower motor heater dont work either plz i need this working ive changed all fuses nd relays i replaced frame to body mount ground wire and i dont know where the rest of the grounds are