No help from SC except to give me the manuf tech line and the gauge part #

According to a tech rep at Medallian Instruments, these cannot be upgraded. THe information he gave me is :

) the housing is sealed and breaking them apart could cause failure or moisture to seep in;

2) the units are already equipped with LED lighting and the only way to increase the intensity of the light is to increase the voltage which isn't recommended.

Kinda makes me call BS though, as there are plenty of guys on the Moomba forum that i believe have the identical set up but have completed the upgrades. PM's sent to those guys. We'll see.