Where can I buy a heavy duty flasher?

Hi,

Where have you checked for one? I found several on the AutoZone website. See pic below.

As far as the issue, you can try a HD flasher, but I question if that will fix it. You should be getting something from the brake and signal lights. Have you checked for power to the light sockets?

Are the parking lights working? If you disconnect the trailer, do the vehicle's lights work properly?

Let me know.

Joe

See pic below.

I'm surprised AutoZone doesn't sell them. That was their website I sent. Now, when you connect to the trailer and only the signals work, either you have it wired wrong, or something is disconnected.

Do me a favor. Try this: Take a battery charger and connect the negative to the trailer frame where you can get a good ground connection. Then, one wire at a time at the trailer's plug, see if the lights work correctly when you touch the positive side of the charger to the pins. Also, confirm the pins are wired in conjunction with the vehicle's connector.

I'm not sure what kind of a pin you have, but a paper clip will usually work when trying to touch one pin at a time.

Let me know if they are all working and turning on from the correct pin. As far as the reverse light on the vehicle, something was disconnected when you wired it new trailer light package. Recheck the connections that were made.

Also, let me know if the vehicle's lights work even when the trailer is attached.

Joe