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Old 11-16-2016, 05:06 PM
walter senior
Join Date: Nov 2016
Location: aberdeenshire
Posts: 1
Smile mercedes 1983 380. sel

Hi can you tell me what the voltage is from from the green wire that is from the spark amplifier to the distributer. I have checked the coil and changed the spark amplifier but still have no h.t.spark from the distributer can any one help. walter.

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Old 11-21-2016, 05:00 PM
Join Date: Mar 2016
Location: Los Angeles, CA
Posts: 1,984
Hi Walter - are you able to post a picture of the wire(s) that you're referencing? May be easier to address if it was visible. Thanks!

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Old 11-21-2016, 05:48 PM
Registered User
Join Date: Feb 2011
Location: Modesto CA
Posts: 4,133

If the ignition system has points in the distributor, the voltage in the trigger (green wire) circuit will be about .3V.

If the system is breakerless, with a magnetic pulse generator (VR) in the distributor, the pulse will vary between .3 - 100V, as a function of the rotational speed of the distributor rotor.
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Old 11-21-2016, 07:07 PM
Graham's Avatar
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Join Date: Nov 2004
Location: Ontario, Canada
Posts: 4,420
Originally Posted by Dmitry at Pelican Parts View Post
Hi Walter - are you able to post a picture of the wire(s) that you're referencing? May be easier to address if it was visible. Thanks!

Dmitry - He said he had a 1983 380 SEL. Wouldn't be a W126 with M116 engine? Don't you have pictures of the distributor and the green wire he is referring to right here on your own site?

He wants to know what voltage he should see.

Walter Senior - Your car likely has same engine as a 1983 380SL (116.962) MBUSA on their Startekinfo site has the full shop manuals.
You might want to check out the section on the ignition system.
Full Manual:
This is from Section 15 (ignition):

By the way - I know next to nothing about that system

And sorry picture came out so large - just pasted link from Pelican How-to area.

85 300D,72 350SL, 98 E320, Outback 2.5

Last edited by Graham; 11-21-2016 at 07:19 PM.
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