The older Sprints and Primavera non LED taillights are bright enough, my only problem with them is they are not also running lights and the right and left side marker lights that are the only running lights aren't so bright.

Got this newer style OEM LED Sprint taillight prewired to for older Sprints from Scooterwest 👍🏽👍🏽
original running lights with original taillamp
original running lights with original taillamp
Running lamps with new taillamp
Running lamps with new taillamp
New OEM LED taillight wiring modified by Scooterwest for older modern Sprints and Primaveras
New OEM LED taillight wiring modified by Scooterwest for older modern Sprints and Primaveras