Hi;
If you are still dealing with the rear view camera on your 91 AE,
I have the same unit, and a 1991 Eagle J, too !
FYI,( #GP RV112 monitor, and #GP RVI11 camera). I removed the camera, checked the connector, and sent it out to AA CCTV, aka Nivie Electronics. See aacctv.com. Nivie, 140 58th st suite 7B Brooklyn
NY 11220......They did a great job, returned in one week !!!
They were sure the problem was in the camera, and repaired it by
replacing 15 capacitors, for $135.00 incl shipping. Shipping to them was $15.00 prox.
Put it back in and it works perfect !!!
REBGORV2