1992 Kit Road Ranger having electrical issues.

The converter is part of the power control center. Locate the circuit breakers. Th1 12-volt DC fuses are behind the metal dead front held in place by a thumb screw. converter is in lower section.
Might look something like this:
converter

You should reply in your original post.
Other post
Is the receptacle you are plugging the rig into GFCI protected? If it is there is some leakage in your rig. One common location is the 120-volt element for the refer.
Start testing by turning off all breakers in the rig. Then try plugging rig in. If it holds, turn on one breaker at a time until power trips out. That should show area where problem exists. If rig trips with all breakers off would indicate problem is between shore power connector and the 120-volt distribution panel.

NBHR$U wrote:
So imtrying to locate the converter,where could i find a manual or diagrams to assist me?

Doubt if there's a manual or diagram out there, for a 31 year old RV, from a small manufacturer that made very few units.