Do you know what model / mfg of converter?
I just replaced my working in good condition Progressive Dynamics 45amp converter, but I did call Progressive Dynamics directly to get the exact replacement model that has all of the battery profiles. If I recall it was 3 screws total and they had the exact same footprint so I did not even have to drill new holes in the floor.
The OEM wiring was somewhat screwy because WBGO used a Black wire for positive and a green wire for Negative or ground. There was a 2nd green wired to ground the converter's case. They should have at least used Red tap around the edge where you plug into the converter. I was lucky to see all of that before starting.
Just so you know, even with all of the power off and fuse removed when you touch that positive wire with metal you get sparks. I didn't get any shock, but it was shocking to see nonetheless
Of course after the installation, I was reading in the manual and they actually say you may see sparking, but that it was normal.
With that said, I really like the new unit, it has remote so I can always see if it is on and what profile