87' 300D Glow plugs and light stopped working overnight. all fuses OK. any ideas?

I always do this test and it works every time

1) remove cover of GP relay cover.
2) remove the big connector. There are 2 in there, 1 big and 1 small.
3) Check strip fuse inside relay or measure it with the meter.
4) Look at the big connector and ohm every connector pin against chassis. They should be all less than 2 ohms.
5) If all 6 ohm out OK then it could be the relay, the problem is not the GP.

The GP light will go out if more than 2 GP ( I think ) are faulty. If 1 is faulty than the light may be intermittent.

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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.