This question is for the guys running the stock lift pump. Can you hear it running when the engine is running? I think mine is not working properly. I keep forgetting to bring my DVOM home from work to check for power. I installed leroys lift pump harness this weekend with the WTS option. When the glow plugs are getting power I can hear it running but with the engine running I can't. I'm trying to replace the OPS due to it possibly being bad. And with the reputation they have I figured it wont hurt. Apparently superman or steroid stan installed the nuts holding the glow plug relay to the intake and with what I have at home i couldn't break them loose.