d5 light
 

well my tranny has been slipping and i have been driving the car in ss mode and always try to keep my rpm over 2 and i see that wen i slow down the light becomes dimmer and i dont have my headlights on and when i press on the gas and make the rpm go higher it comes darker.can anyone tell me what that might be causing that..........thanks

Sounds like a alternator going bad, you should see if its that is the car throwing any codes?? How old is the battery?

could be from trans--it will show a flashing D5 -usually while slipping when hard on the gas,,if you have a long term use of it,,,you are in test pilot territory

my other guesstimate would be with the battery-charging system- and Ground wires.
acura sells a $20 kit with neg batt cable and several small grounds from frame to engine
These are important and often the root of weird electrical, low volts issues

Parts stores will test everything for free, just get the car there