Who makes this and what is it called?

[F6BANGER]

Its in the trunk of my Interstate and its not letting the right brake light work. It doesnt have a brand name on it. Some type of tail light module. By the arrows, it looks like it was made 12/97

[KSDragonRider]

looks like a trailer light controller to me.

[F6BANGER]

Sorry, I shoulda put what it does.  Its hooked up to the blinkers to make the Trunk lights work as blinkers also. I just dont know what it is called or who makes it.

[chrise2469]

I'm just guessing without knowing which end goes to the trunk lights. if the lights go from the black trailer style plug to the interstate lights  it is a 5-4 convertor.

The other way around and it would be a vehicle to vehicle tail light convertor.  It takes your converted 4 wire signal-the trailer plug- and converts it back to a 5 wire signal.   Here's a different one:
http://www.etrailer.com/p-118158.html

You have to follow the wires to know what style of convertor you will need to replace the defective one.

Not much help but it's all I got.

EDIT:  The more I look at the picture it looks like a 5 to 4 convertor.  The 4 wire connector with the extended hood is a bit unusual and is confusing me a bit. 
It could be early  hopkins 48915
http://www.etrailer.com/Wiring/Hopkins/HM48915.html
or a calterm 5-4
http://www.ebay.com/itm/Trailer-Light-Isolated-Power-Supply-Converter-5-4-wire-PM32-/290660635436

[F6BANGER]

I'm just guessing without knowing which end goes to the trunk lights. if the lights go from the black trailer style plug to the interstate lights  it is a 5-4 convertor.

The other way around and it would be a vehicle to vehicle tail light convertor.  It takes your converted 4 wire signal-the trailer plug- and converts it back to a 5 wire signal.   Here's a different one:
http://www.etrailer.com/p-118158.html

You have to follow the wires to know what style of convertor you will need to replace the defective one.

Not much help but it's all I got.

EDIT:  The more I look at the picture it looks like a 5 to 4 convertor.  The 4 wire connector with the extended hood is a bit unusual and is confusing me a bit. 
It could be early  hopkins 48915
http://www.etrailer.com/Wiring/Hopkins/HM48915.html
or a calterm 5-4
http://www.ebay.com/itm/Trailer-Light-Isolated-Power-Supply-Converter-5-4-wire-PM32-/290660635436

I think you are right chise2469
Thank you very much.