Carolina Customs web site explains the module for this pretty well and shows pic of such.
http://www.carolinacustom.com/pages/..._kits_page.jsp

Hope that email addy crud is correct enough to load for you, but if not, just go to www.carolinacustom.com and look up suicide safety pin kits.

Looks like a good product. Juliano's and Autoloc all have them.
I think it said this required an electric speedometer to work properly though.

Huey