Try some of these .
http://www.aircraftspruce.com/menus/el/ ... trobe.html
We've put in something similar as a straight bulb replacement in what is thought to be C150 type bulb holders , on a permit a/c .
Brighter nav lights now . And if sw. on , off and back on within 3 secs they strobe . .....Poor man's anti-col .
rgds condor .