When I installed them on my 150D my A&P/IA had no problem with it. Here's a bit more detail on the subject:

http://www.cessna150152.com/forum/ubbthreads.php?ubb=showflat&Number=8910#Post8910

Be sure to read Charles Hanna's responses in the above link as well (he's an A&P and 150 expert).

Last edited by Kirk; 08/30/18 03:13 AM.
-Kirk Wennerstrom
President, Cessna 150-152 Fly-In Foundation
1976 Cessna Cardinal RG N7556V
Hangar D1, Bridgeport, CT KBDR