2008 rxt wiring

[Garyg99]

2008 rxt 215 was bought with a blown supercharger replaced it and ring gear after reinstalling motor, tried to start it and it turns over no problem but won’t start just backfired a couple times and when it finally did start rpm’s went thru the roof. So killed it immediately. My question is this is there chance that I may have accidentally plug a wire in on the wiring harness in the the wrong place every plug seems completely different (except for coils) think but not sure. First time owner of pwc so just starting to learn stuff. Also the display flashes “sensor” when you first plug in key but read that that is a compass error. Tried to find in the shop Manuel anything on reinstalling wiring harness but?? Thanks in advance this forum has been really helpful for this noob.