*Please clarify the comments in red below. Are you talking about the plug that attaches to the 5 prongs of the Relay and provides power to each GP? If so, I checked each 'socket' and it returned 0.0 ohms. Is that telling me all 5 plugs are grounded either in the GP or the wiring?*

*Larry*


On 12/30/2016 6:44 PM, Craig via Mercedes wrote:
On Fri, 30 Dec 2016 16:54:18 -0500 Larry Turner via Mercedes
<mercedes@okiebenz.com> wrote:

Well, I have more fuses and a new relay so I plan to put the new relay
in and see what happens.  Actually that's a easier procedure than
trying to reach all those GPs with a MM.    Worst case, I'll pull the
fuel lines and take a closer look at the wiring harness.  1st things
1st,  ;-)
You don't need to reach all the glow plugs with your multimeter, you can
check for shorts at the small plug which plugs into the glow plug relay.

1st things 1st, indeed!

The first thing, however, is measuring the resistances seen at the small plug to ground.

Do not put the new relay in before you do that.


Craig

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