Hello, I just purchased a GP-38 with Tru-Blast II horn and with my MRC Tech II 027 the horn does sound when the horn switch is activated. It operates all my Lionel locos and MTH locos and their horns/whistles with no issues. All I get is a blink of the lights from the GP38.
The locomotive performs fine and pulls great so I am very pleased with it but I would like to hear the horn sound. Is there a bell also, that particular transformer does not have a seperate bell button, could that have something to do with the horn not working?

Thanks