I need some help with my 2001 753G. Machine has 1400 hours and has lived a pretty easy life. Recently I started getting several error codes and it will lock up like the seat bar was raised. Codes include 8-22, 5-21, 4-21, 12-23, 11-06. The seat bar light will also flash two times and other times three times. The codes are for a whole mix of items like high hydraulic pressure, high oil pressure, coolant temp out of range etc. which leads me to believe it's an electrical issue. Further there are times it will operate like nothing is wrong, but will stop suddenly and throw the same codes as well as me out of the cab...????. I have replaced the seat bar sensor. I have also looked the wiring harness over and unplugged and cleaned all of the connections under the cab. I have also removed and cleaned all of the grounds I can find and the battery terminals and cables. Battery was replaced this spring. I load tested it and it was good. Voltage shows 14.4 to 14.6 across the posts when running. Below are a couple of links of videos of it running normal and with the issues. Any suggestions would be much appreciated. Thanks! https://youtu.be/8SXjOK98MDc https://youtu.be/Jf0D1lXbrmY