2017 Cub Cadet 750 camo no digital dash no spark no fuel pump

[dalerio007]

i have a 2017 cub cadet challenger 750 camo, after a month of nonstop work with the pandemic i was finally getting a chance to ride it. it would not start, the battery was dead, went to charge the battery and noticed a mouse had chewed a yellow wire one of2 going to a block of some kind in battery box, it is tied into the 2 fuse relay breakers  attached to the starter relay. there is a red with stripe wire that goes to a harness below the rectifier in engine compartment, it has no power to it with multimeter and the fuse block is getting real hot. other than that the dash lights up, but no readout and the gauges dont cycle, the fuel pump does not start. on the fuel pump i checked the red wires to the cdi and both have contact and are intact but one does  not have power when the key is on and there is no spark  i tried starting fluid. i have swapped out the cdi from my cousins  same year and model, also the ecu and the main relay. i have no idea where to look now. his has broke the shim again and will not start. also i did notice that i wiggled a wire connector going to a sensor on the engine and a couple lights came on on the dash, the stirring wheel one and check engine but only did it once and i cant get it to do it again. i have looked over the harness for anymore damage and have found none.

has anyone seen this problem before, is it wiring? ground? what do i need to check next. the place i bought it has no service the guy said he could only swap parts and try. sent me to another place over an hour from me  and that guy on the phone said he was covered up and didnt know when he could look at it so he must be busy lol. besides i dont want to have them charge me $3000 to replace everything on it before they get going.

my advice is do not buy a cub cadet, we thought we were getting a cub cadet and it turns out it is a cheap chinese pos. i still love my cub but wish i had known this before i bought it and i would not have.

any help would be appreciated thanks

[dalerio007]

ok there is a purple wire that comes out of the middle plug on the fuse box, it goes under the battery box and it splits and goes to the ecu and to the dash, the wire going to the ecu was the problem if anybody ever has this same problem. to check it test for voltage to the ecu on the purple wire then trace back, i hope this can help someone else because i could not find anything on this anywhere. and..................checking electrical problems and wiring sucks 

[JCub]

Mine is doing the same exact thing and every thing you've done I have done. All I need to do is trace that wire? What should the voltage be at the plug for the ECU?