my problems only occur when the interior dome light comes on.

I dunno... I can't help thinking that if turning on a single three or four watt light bulb takes your whole electrical system down enough to crash your empeg, then you must have some other problems going on.

And why would you try to "economize" by using the smallest wire possible to feed the empeg? Sure, it might run OK on 16 gage wire, but why take the chance?

tanstaafl.