Try checking your fuses. The injectors are on two separate fuses, so if one popped while installing the radio you could only have half the motor firing. That would explain the rough idle/stalling.
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Seeya,
Steve R. in North Jersey
'16 Go-Mango Dodge Charger R/T. It's so good to be back in a V8-powered, RWD car!
Former Toy - '88 Monte SS - had lots of mods...
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