battery light comes on at redline

[nwagtmustang]

Hi there,

When I almost redline the car in 1st the battery light comes on until I let off or upshift. I have replaced the battery, ignition coils, plugs and wires, as well as air filter. I did all that to another problem I have been having. I have another post regarding the car taking a while to start. I am not sure if this is related to that or a different problem entirely. I have a 98 gt mustang, 5 speed. Any ideas?

 

[03ghoststang]

check your alternator it might be overcharging because its not being shut off at WOT

 

[Mustang5L5]

have your alt tested