Rear park light won't go off

[Jtnorton]

I have a 1 year old Solera with sprinter chassis. Discovered yesterday that taillights (parking not brake lights) are on yet everything inside is off. MH was plugged in but now is not and light remains on - left side rear is much brighter than right side. Right side very faint. Any ideas what is going on or for a cure? Thanks.

[caper]

It sounds like you have a ground issue with the lights.

[Jtnorton]

Thanks. How to fix?