So I have read a lot about the glow plugs still running after the WTS light turns off. But with my 02 psd the WTS shuts off after 15 seconds then while voltage testing the posts the post most towards the drivers side stops reading voltage after 20 seconds. The truck turns about 8-10 times before it starts. So my question is since I have constant voltage on other terminals would this just be a bad glow plug relay or could it be something like the wire running from the pcm? Thanks in advance.