Engine only starts when light switch is on when I turn lights off my dash goes completely black won't show anything I'm able to drive car though.... What's going on how do I fix this can someone help me figure this out? It's a 98 Cadillac DeVille. I replaced the battery thinking that would fix it but it didn't. This started happening when my driverside window got busted out I had to replace window accidentally left door open and drained / killed the battery every since then my car hasn't acted right...
How long has your 1998 Cadillac DeVille had this problem?
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