Blower motor control module replacement part

[Zilge]

I have a 98 explorer Eddie Bauer with the EATC. My blower motor control module has gone bad and I'm trying to determine the correct replacement part. Motorcraft has two parts, YH1832 and YH1835, which seem to both be correct replacements. The YH1832 is double the cost of the YH1835.

Does anyone know the difference between these two parts?

Thanks