I just just finished installing a 400sbc into my TA about a week ago and now I have no heater, horn or wipers. Wiring wise all I did was remove the ECM, I have checked all fuses and they all look good. With me living in northwest washington the wipers are really important . Any clues? Thanks.

 

Does your radio work? Have you checked fuses? If the fuse is good and the radio is not working might be your ignition switch. It might not be activating the accessories.

 

My first guess would be that you left off a power wire, maybe down by the starter? This stuff is powered full time.

 

thanks for the replies.
I actually jumped into the car this morning and guess what everything worked just out of the blue so I guess I need to get under my dash to check for bad wires .

 

Just can't beat these old third gen Fbodies, they heal themselves sometimes!