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Yet Another------What Is This Part? #918486 02/01/11 02:00 AM 02/01/11 02:00 AM
Joined: May 2008 Posts: 1,131 Thigh-Gap Junction @ @#$%&*! OP New user name, Same old jerk!
@#$%&*! OP New user name, Same old jerk! @ Joined: May 2008 Posts: 1,131 Thigh-Gap Junction	I was looking for something else a while back and found another interesting part that I can only speculate on its purpose. The housing is like a regular electronic voltage regulator but the connector is the familiar 5-pin ECU. It also has an adjustment screw with an arrow that looks like it says "high" on one end. The part number is pretty clear as 3501840. It can't be an ECU since it doesn't have the power transistor and I can't fathom the need for a 5-pin regulator. Maybe an adjustable timing control? All WAGs welcome. 6449798-ECUadj.jpg (169 downloads)

Re: Yet Another------What Is This Part? [Re: @#$%&*!] #918487 02/01/11 02:09 AM 02/01/11 02:09 AM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	Thats the plug for the electronic ignition setup. I wonder if it is a drag race only schmere, designed to operate WITHOUT an alternator.....

Re: Yet Another------What Is This Part? [Re: @#$%&*!] #918488 02/01/11 11:57 AM 02/01/11 11:57 AM
Joined: Feb 2008 Posts: 595 CentralVA. B BBCoronet mopar
BBCoronet mopar B Joined: Feb 2008 Posts: 595 CentralVA.	Thats off of a police package car. We had a bunch of police cruisers in the yard years ago and just about everyone had it. I've got one around the shop somewhere.

Re: Yet Another------What Is This Part? [Re: BBCoronet] #918489 02/01/11 12:32 PM 02/01/11 12:32 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	You know, I have seen parts listings for regulators that say not for 117A units, etc. I wonder if that is the regulator for that application? They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Yet Another------What Is This Part? [Re: Supercuda] #918490 02/01/11 12:53 PM 02/01/11 12:53 PM
Joined: Jan 2003 Posts: 13,572 md M mopars4ever I Live Here
mopars4ever I Live Here M Joined: Jan 2003 Posts: 13,572 md	According to the online part search it is: 3501840 1977-79 A/C CUT-OFF CONTROL and 3501840 control clutch cut off 77 volare, aspen, fury, monaco, gran fury, royal monaco

Re: Yet Another------What Is This Part? [Re: mopars4ever] #918491 02/01/11 12:54 PM 02/01/11 12:54 PM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	So that probably IS a Police spec part. It would disable the A/C clutch on WOT to improve acceleration. Kooky.

Re: Yet Another------What Is This Part? [Re: Kern Dog] #918492 02/01/11 06:08 PM 02/01/11 06:08 PM
Joined: Oct 2007 Posts: 2,886 US of A A38s! master
A38s! master Joined: Oct 2007 Posts: 2,886 US of A	Yes. They used to be a switch mounted on the dash. Don't know what year they came up with this 74 or 75 I figure. Still in use 1978. WANTED: Your 71-78 Late B-body sedan parts! Police or Civilian.

Re: Yet Another------What Is This Part? [Re: A38s!] #918493 02/01/11 06:23 PM 02/01/11 06:23 PM
Joined: Oct 2007 Posts: 2,886 US of A A38s! master
A38s! master Joined: Oct 2007 Posts: 2,886 US of A	6451129-cutoff.jpg (99 downloads) WANTED: Your 71-78 Late B-body sedan parts! Police or Civilian.

Re: Yet Another------What Is This Part? [Re: A38s!] #918494 02/01/11 09:03 PM 02/01/11 09:03 PM
Joined: May 2008 Posts: 1,131 Thigh-Gap Junction @ @#$%&*! OP New user name, Same old jerk!
@#$%&*! OP New user name, Same old jerk! @ Joined: May 2008 Posts: 1,131 Thigh-Gap Junction	Quote: That picture is pretty darn conclusive. Now, what is the adjustment for? Is there a wiring diagram? Anybody want it... I admit I was holding out the police info and knew it came from an A38. I might be able to dig up the harness it came off but that would be a long shot.

Re: Yet Another------What Is This Part? [Re: @#$%&*!] #918495 02/02/11 09:51 AM 02/02/11 09:51 AM
Joined: Jul 2008 Posts: 53 Jensen Beach, Florida pressureangle member
pressureangle member Joined: Jul 2008 Posts: 53 Jensen Beach, Florida	Not a WOT cutoff, but an RPM disengage for the A/C. Maybe. Why do I torture myself so?

Re: Yet Another------What Is This Part? [Re: pressureangle] #918496 02/02/11 02:45 PM 02/02/11 02:45 PM
Joined: Feb 2004 Posts: 7,195 Harrisburg, Pa. screamindriver master
screamindriver master Joined: Feb 2004 Posts: 7,195 Harrisburg, Pa.	And if that's the case I'd bet the dial would set the RPM where the cut-off would operate...Cool stuff...

Re: Yet Another------What Is This Part? [Re: pressureangle] #918497 02/02/11 04:33 PM 02/02/11 04:33 PM
Joined: May 2008 Posts: 1,131 Thigh-Gap Junction @ @#$%&*! OP New user name, Same old jerk!
@#$%&*! OP New user name, Same old jerk! @ Joined: May 2008 Posts: 1,131 Thigh-Gap Junction	Quote: Not a WOT cutoff, but an RPM disengage for the A/C. Maybe. An RPM switch could prove useful A wiring diagram would sure help figure out how it works and how to use it

Re: Yet Another------What Is This Part? [Re: @#$%&*!] #918498 02/04/11 07:26 PM 02/04/11 07:26 PM
Joined: Jan 2005 Posts: 4,404 Michigan MarkZ Worthy
MarkZ Worthy Joined: Jan 2005 Posts: 4,404 Michigan	Mother Mopar recycled existing parts. That really through me for a loop and would have never guessed as to what it was. Now that I think of it, that would be a cool addition the Fifth Avenue when I put A/C back in it. I'm going to start looking around for one of those. 1987 Fifth Avenue - 512/518/D60

Re: Yet Another------What Is This Part? [Re: MarkZ] #918499 02/04/11 09:29 PM 02/04/11 09:29 PM
Joined: Feb 2003 Posts: 518 COLLINGWOOD, ONT 71_deputy mopar
71_deputy mopar Joined: Feb 2003 Posts: 518 COLLINGWOOD, ONT	here ya go! 6457377-CCF05022011_00001.jpg (81 downloads) Last edited by 71_deputy; 02/04/11 09:33 PM.

Re: Yet Another------What Is This Part? [Re: 71_deputy] #918500 02/05/11 12:54 AM 02/05/11 12:54 AM
Joined: May 2008 Posts: 1,131 Thigh-Gap Junction @ @#$%&*! OP New user name, Same old jerk!
@#$%&*! OP New user name, Same old jerk! @ Joined: May 2008 Posts: 1,131 Thigh-Gap Junction	Quote: here ya go! That's all fairly simple except, what is the "Signal Generator"? I expected it to be tied into the ignition but maybe it was enabled with the siren or auxiliary lights.

Re: Yet Another------What Is This Part? [Re: 71_deputy] #918501 02/05/11 03:31 PM 02/05/11 03:31 PM
Joined: Aug 2007 Posts: 6,095 Valencia, España NachoRT74 master
NachoRT74 master Joined: Aug 2007 Posts: 6,095 Valencia, España	woah!!! thinking now on a nice upgrade on my car there are several of those on ebay right now, but they sell them as a REGULATOR that or simply a mechanical switch like this: But wondering... where that module takes the RPM reading? With a Charger born in Chrysler assembly plant in Valencia, Venezuela

Re: Yet Another------What Is This Part? [Re: @#$%&*!] #918502 02/05/11 04:43 PM 02/05/11 04:43 PM
Joined: Apr 2006 Posts: 4,220 West Plains, MO DrCharles master
DrCharles master Joined: Apr 2006 Posts: 4,220 West Plains, MO	Quote: Quote: here ya go! That's all fairly simple except, what is the "Signal Generator"? I expected it to be tied into the ignition but maybe it was enabled with the siren or auxiliary lights. Looks like it might be cable-driven (tach or speedo)? The speed sensor for the cruise control on my '84 Ferd pickup sits in the same place, spliced into the speedometer cable.

Re: Yet Another------What Is This Part? [Re: DrCharles] #918503 02/09/11 08:27 PM 02/09/11 08:27 PM
Joined: Oct 2007 Posts: 2,886 US of A A38s! master
A38s! master Joined: Oct 2007 Posts: 2,886 US of A	It is. Off the speedo cable. Fact tach was not a Pursuit option. WANTED: Your 71-78 Late B-body sedan parts! Police or Civilian.

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