trailer turn signals not working

[mrkrausman]

97 FLD. I have tails and markers but no turn signals or hazards on trailer. They work fine on the tractor. How do I troubleshoot. Thanks in advance.

[Pablo-UA]

bad wiring under cabine ore bad trailer - trucktor cabel.

[otherhalftw]

Check your prongs in the trailer connection box.

Just use a screw driver (flat head) or a pocket knife to spread the prongs apart a little.

Often the prongs will lose connection by getting crimped together at the separation slit.

[mustang970]

On drivers.side firewall under hood, there are separate fuses and circuit breakers for trailer lights. Your tractor lights will work, yet trailer may not. Check those first.

[oc83baker]

Check your prongs in the trailer connection box.

Just use a screw driver (flat head) or a pocket knife to spread the prongs apart a little.

Often the prongs will lose connection by getting crimped together at the separation slit.

Try this
I had the same problem and it was the pigtail prongs.