Went out this morning for work to start my blazer(98 Chevy s10 blazer) and when I turned the key on (when the lights radio and everything else come on) the starter engaged and it fired starting my blazer. I didn’t turn the key the whole way forward to start it. The blazer started and the starter is staying engaged and grinding on the fly wheel. Now to remind you. This is in the AUX postion. Didn’t push it the whole way forward( when you turn the key and it turns back) to start it. Any help would be great. Jobs on the line with all the problems I’ve been having since I’ve bought it. Thank you in advance.