Hey all,

My old 81 w/84 powertrain 300D has been performing pretty well as a daily driver, until this past eve. Went to start it, noticed the glow plug light not working, and...no start. I live in the MO/IA/IL Tri-State region, so the weather was conducive enough to not be a cold start issue today.

From reading on the forums, I suspect a Glow Plug Relay issue, but...how would you suggest me going about tracking down this issue? The glow plugs have been working like a champion for about a year and a half, until now. Of note, the car was driven in the rain for a couple of hours today at highway speed, so I'm wondering if water somehow got forced into it.

Let me know what your thoughts are on diagnosing. I know already that the unit is on the driver's fender; that's about it. I also know that I have (potentially) access to 3 300D's at a local junkyard (a '78 and 2 '83s); my guess is IF there are any relays in any of those, they would work for a quick swap out. I also kind of like the easy-to-find-American-parts-solenoid swapout idea as well, but first...I need to get the thing back on the road!

Thanks for your input.