[JRTJH]

Danny,

The LED's you bought, GRV T10 921 194 24-3528 - AC/DC 12v-28v pack of 10 "break down" as follows:

GRV is the manufacturer/distributor
T10 is the base style which supports the old nomenclature 921/194 incandescent base style
24 is the number of LED's on the assembly
3528 is the size of each LED
AC/DC 12v-28v is the acceptable input voltage that can be used to power the assembly
and they come in a package of 10 assemblies.

There are a number of brands of LED's GRV, GRB, ASIN, B00EDFM along with the incandescent bulb companies like Sylvania, OSRAM, GE, Phillips, etc.

Often (not always) the "name brand companies" like Sylvania, etc, if you take apart their LED assemblies, somewhere on it you'll find GRV or GRB or ASIN stamped on the actual LED board. So, even though a number of companies market "expensive and better LED" technology, typically they are just "rebranded current technology" from the basic Chinese manufacturers.

Most of the RV parts store brands like SuperBrite and CW brand are actually built by GRV and packaged either by GRV for CW or shipped to the US and repackaged by an American company with their name on the package. Unfortunately, there's not much difference in LED from brand to brand. Typically what you find on EBay or Amazon is the 18 month old technology and what you find in CW or from SuperBrite, etc, is closer to "the latest technology"... Otherwise, an LED is an LED..... Whether you pay $10 or $1 for it, there isn't much difference if it's the 18 month old technology. Where you can "pay for better" is by buying current technology, but even then, paying $10 for it, you'll still wind up with "old stuff" in a year or so......