Transparent connector comes with integrated LED

DEUTSCH DT Detector connector provides a visual confirmation of power by producing a distinct glow, which helps with troubleshooting, especially in areas with difficult connector visibility and accessibility. The 2 way plug provides a transparent housing and a wedgelock with an integrated 12 or 24 volt LED. Device is environmentally sealed and designed to withstand the demands of rugged industries.  http://www.te.com