The 04 Outlander has night lights outside on a dual filament bulb but only one filament is wired. The inside bulb has only one filament for brakes only. You can add brakes to the outside bulb just by pulling back on the wire that is stuffed in the harness and with a quick connect you can wire it to the brake bulb, this will give you four brake bulbs upon braking ( 4 is better than 2 ). To add night light to the inner bulb your going to have to change the existing socket for a dual filament one(this might void warranty). If you go with amber blinker LED you will need to parrallel bulb with 7.5 ohms resistor at 25 Watts minimum (This is to keep blinking rate the same). For your question number 2 yes you are right about the cruise not working. This is a safety feature on Mitsubishi vehicles so that when you have a burnt brake light cruise ceases functionning to warn you of a burnt brakelight. So if you have a regular bulb and a LED the system detects as if you had a burnt bulb since the LED uses less than a watt to power up compared to 21 watts for regular 7443 bulb. Hope This helps.
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