I didn't install mine, MCS Diesel did. But, it has worked good. No codes at all, and it's been in for about 2 months, and 2 trips to Colorado with a lot of use during that time. However, they installed the LED under my DTT box, blocked by the steering column. I wish they hadn't. I kind of randomly click the button and never know what combination of OD lockout and tow/haul I'm getting unless I take my eyes off the road and literally duck my head down to see the stupid LED. Personally, I'd keep it somewhere where it is visible easily. With where mine is, I can't say if it's "too bright", but it is only on when you have OD locked out, so that should be a minority of the time.