blows dome light fuse

I have a 93 GS300, it blows the dome light fuse as soon as you install it. The fuse runs some other stuff other then just the dome light. I disconnected the interegation module, the steering wheel module and still blows fuse. anybody run across any problems with these? any help

You obviously have a direct short somewhere.  When this happened on my GX, it was the light in the left sunvisor that had shorted.  Look at all of your interior lighting.