trailer light module

[Skye T]

Hi Lights on my trailer were starting going wonky, i.e lights worked one day next day nothing, next day lights ok but indicators stopped working. Now only the indicators work. Took of connector all looked fine traced back to the trailer light module. take off offside rear light it is bolted behind lights. The module was full of water, Ive tried ecs the manufacturer who say it was supplied only to Nissan contacted my local dealer who wasn't interested. Cant find anywhere. Anybody got any ideas