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ATS-04-TSSM 30-Second Self-Canceling Turn Signal Adapter Module, Direct-Connect and fits ALL (Sportster 2004-2013), (Dyna 2001-2011), (Softail 2001-2010), (Road King, Electra, Ultra, Street & Road Glides 2001-2013) when using along with OEM TSM or TSSM. This module replaces the OEM turn signal flashing functions but leaves the bank angle sensor and serial data connection in tact. No need for a new ECM! **NOTE: If the OEM TSM/TSSM prevents the bike from starting, this module will NOT work to fix this issue, a new ECM is needed.
- Intended for use with OEM TSM or TSSM on the following models:
- (Sportster 2004-2013)
- (Dyna 2001-2011)
- (Softail 2001-2010)
- (Road King, Electra, Ultra, Street and Road Glides 2001-2013)
- Simply plugs in between factory TSM/TSSM and the original wiring harness connection
- Does not interfere with the OEM bank angle sensor or serial data connection
- 100% Plug-n-Play
- The industry “originals” since 1990!
- MADE IN THE USA
- LIFETIME WARRANTY
ATS-04 Improvements
Uses a speed-sensing self-cancel algorithm on most motorcycles equipped with an electronic speed sensor.
Keeps the turn signal flashing while stopped (for example at a traffic light) and begins the cancel countdown once the motorcycle exceeds roughly 7 mph.
If your speed comes down below 7 mph while the turn signals are still flashing, the module will keep flashing until the bike exceeds 7 mph and the countdown starts again.
Provides more OEM-like cancellation behavior than a simple timer.
If no speed sensor is connected (such as on older Harley-Davidsons with cable-driven speedometers), it automatically switches to a 30-second timer-based cancellation mode.
Practical Difference
If you’re riding an older Harley or custom bike and just want automatic cancellation and LED compatibility, the ATS-03 does the job well.
If you want turn signals that behave more like modern OEM systems—staying on while stopped and canceling based on actual vehicle movement—the ATS-04 is the more advanced module and is generally considered the successor to the ATS-03. With both boasting the industry’s very first LIFETIME WARRANTY and the only module made in America upgrading makes perfect sense!
