Put the old obs harness back in the truck today. Got everything connected, and powered. But we ran into some issues. First the blinkers flash really fast when you use them...it acts like a tail light is out or something but the tail lights work fine. Second, The brake lights dont work at all. And Third, when you turn on the heat/blower motor, it clicks on and off and on and off repeatedley and the lights start flickering. What do you think is the issue? Grounds?