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Viperkiller97 06-06-2011 08:12 PM

MSD 8684 Timing Retard Control for Late HEMI
Hi I bought the MSD 8684 Timing Retard Control for Late HEMI and tried to install it on my 2007 Dodge SRT8 Charger. I could not plug it into my Crank Sensor. Everything else was perfect>>:angry: Is there an adapter or what am I doing wrong. Pulling the starter out is no fun on this car. Please help

Viperkiller97 06-07-2011 09:43 PM


msdtech27 06-08-2011 09:34 AM

1 Attachment(s)
here is the pin out diagram for your sensor. you will need to get a new connector and using this diagram..

Hemi orange 09-28-2012 07:44 AM

as advertised...
Will MSD send me the proper connector for my 09 Challenger SRT-8? I purchased the 8684 "as advertised by MSD" being a "Direct plug-in to factory sensors" for late model Hemi's. I will provide my shipping information upon request.


msdtech27 09-28-2012 09:07 AM

will not work with 09' Dodge's...

Hemi orange 09-28-2012 11:22 AM


Originally Posted by msdtech27 (Post 77129)
will not work with 09' Dodge's...

When was it discovered that this unit did not work with 09 Dodge's? Thanks.

Hemi orange 10-05-2012 09:14 PM

U there?
Can you give an answer? These things are still being sold to the public for 09 dodges... Do you care?

msdtech1955 10-08-2012 06:44 AM

who is selling these to 09 ( ...the crank saw tooth wheel is different then any of the older other years... (car or truck hemi)..

plus, that 8684 we have not made nor sold those units in 5 years.

Hemi orange 10-31-2012 09:32 PM

Msd 8684 is being sold right now for 09 - 10 hemis on summit, jegs and dozens of other retail outlets.

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Timing Retard Control

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MSD Timing Twister Retard Controllers
Part Type:
Timing Controllers, Electronic
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Beginning Year:2003
Ending Year:2010
Engine Type:V8
Application Notes:Designed for use with Hemi engines.

msdtech1955 11-01-2012 07:10 AM

not jegs .....summitt ..will notify them today that they still have it on the web...and on amazon, well, that is not an msd dealer.

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