I think that he's got ya' there Charmalu!

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

The good news is that most of those components are standard electronic components available at Radio Shack or a local electronic supply house. The key is finding a schematic. I don't know if such a schematic can be found in the FSM or not.

It would be easier to find a replacement.

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2001 SLK 320 six speed manual
2014 Porsche Cayenne six speed manual

Annoy a Liberal, Read the Constitution

Of course it also doubles the chance of getting a wrong answer.

Reminds me of my flying days. Compared to a single engine airplane, a multi-engine plane provides some redundancy in the event of a failure... of course it comes at a price, since there is twice as much to go wrong!

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Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica

Considering my options here -- many thanks to you all.

If I didn't need to drive the car I would definitely take a look at the solenoid contact.

Incidentally, I have what I think is positive proof that the temp sensor DOES run data through the relay. There are seven contacts in the plug. Five check out as glow plug contacts, the seventh is unknown (Any guesses, please?), and the sixth produces consistent temp gauge readings and w/out contact the needles drops to no reading.

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1980 300TD

Here is the schematic of the glow relay... at least on an '85



Why the washer motor is tied in through the glow relay is a real mystery to me... maybe the kind of logic used in running the tach through the EGR controller.

Attached Thumbnails

 

__________________
Current Stable

• 380SL (diesel)
• Corvette C5
• Manx
• Baja Bug
• F350 Powerstroke
• Auburn Boattail Speedster replica

i did a write-up on another site on how to wire up a 81-85 relay to work on the older system. is it ok to post that link on here or it that frowned upon?

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1983 300SD (daily driver)
1991 420SEL (work in progress)
1979 300SD (future replacement for 83 SD)

RIP:
1983 300SD (totalled)
1986 420SEL

Go for it.


.

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1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/

Does that mean that your relay looks nothing like the pictures posted in this thread?

It definitely doesn't match the '85 schematic above, and it doesn't remotely match up to the relay I got off of an '82 parts wagon. They seem to have changed relay wiring/function nearly once a year...

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1980 300TD

The 80 300D and the 80 240D have a GP relay that has the 3 legs, not the flat sided one like the later years. for some odd reason they cost quite a bit more.

The may have been wired different, don`t know for sure.

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

here it is:
Glow plug relay upgrade

the instructions are for an W116 SD but should be very similar for a D or TD

__________________
1983 300SD (daily driver)
1991 420SEL (work in progress)
1979 300SD (future replacement for 83 SD)

RIP:
1983 300SD (totalled)
1986 420SEL

Id still like to see a true schematic of the GP relay. The one shown before is just a block diagram.

From what Ive seen there are many different models from MB for the GP relay. They all have several electrolytic capacitors and a couple of either transistors or triac type devises. Ive got several non working GP relays that I will be swapping parts in when it warms up enough.

Ive spoken with Hella and they will not release their OEM schematic. Had no luck with MB either.

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1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."