11 Cascadia electrical problems >.<

11 Cascadia with a DD15. I've been in this truck since January, and she's given me nothing but trouble. Idk why, with only 240k on the clock but anyway...

Issue 1 is that she keeps blowing fuses and I dont know why, usually its the power sockets and CB fuses that burn out but not always. I've replaced them all with higher amp fuses and still they blow.

Issue 2 is fault codes...I'm showing CHS 71 and CAB 33 codes...I've searched all over the web, talked to shops, even called 3 different freightliner dealerships and nobody could tell me what those codes mean. Does anyone know?

Issue 3 is the idle shut down timer that pisses me off every night. I can't run my bunk heater for more then 3 or 4 hrs before the truck turns it off and I have to get up and fire it up to recharge the batteries...waking up 3 times a night to run the engine is not conducive to a restful night's sleep. I've tried every trick I could find from web searches to try and get this thing to idle and it wont. So my only choice is some kind of hard bypass of the shutdown circuit...if someone can provide me with a wiring diagram for this thing I should be able to disable the shutdown circuit, so if anyone has that or any other tricks with the trucks electrical system that will help with this I'd really appreciate it!

 

No help? I'm close to switching companies simply because I'm sick of this truck's bullsiht, but I really dont wanna do that cuz they've been good to me and my DM is awesome.