I just got a 89 chevy Rs 2.8 v6.It has a problem.The traillights and trun signals donesn't work right.But heres the odd part.When i trun the headlights on the fuel pump comes on.All so when i turn the trun signal on the fuel pump comes on and the radio starts to make a noise.Can anyone tell my where to start to fix this.Thinks

 

Find where the PO doctored it and undo it

Next, look up the proper diagram on ATGO and trace the circuit

 

Ok thinks,Get this the key with the chip is broke of in the swich

 

Try to dig out the piece with the pellet in it, measure the resistance and order a new lock cyl with key. Or put a resistor equal to the pellet's value in the connector under the column and use a universal lock/key