1997 ES 300 dome circuit short

[ureda]

My 1997 ES 300 has a short in the (7.5 amp) dome light circuit. It includes the clock, door - vanity - trunk - and dome lights, as well as theft deterrent and keyless entry systems. All the lights (and clock) seem OK - Is there an easy way to test the theft deterrent and keyless entry or to identify the location of this short? Thank you