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Topic: Mystery Electrical Connector (Read 661 times) previous topic - next topic

Mystery Electrical Connector

I'm up under the front of our coach, working on my leaky throttle valve.  (More about that in a day or two.)

I noticed a "Cannon" plug hanging down from the big bundle of wires, above and slightly inboard of the steering box.  Just wondering if anyone knows what this might be for?  It doesn't look like it has ever been connected, so I assume it was for some device that is not present on our coach.  I can't imagine what its purpose would be, especially in that particular location.  It looks very Military - reminds me of my Air Force days.

Any guesses?
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Mystery Electrical Connector

Reply #1 –
Have you plugged-in your handy-dandy VOM ?
1993 U-240 "La Villa Grande"..CAT 3116 w/ Pacbrake PRXB...Allison 3060 6-speed..
Previous: 1983 Airstream 310 turbo diesel, 1979 Airstream 280 turbo diesel
                                      Build # 4297
                                      PNW natives
                      Home base:  'Cactus Hug' (Ajo, Arizona)
                        DW Judy & Chet the wonder dog
                        Full-Timers 'Sailing the asphalt sea'

Re: Mystery Electrical Connector

Reply #2 –
No, I'm busy working on the air system...don't want to get side-tracked.  I'll save investigating the plug for a time when I don't have anything else to do...like THAT will ever happen.        DW: :snap:
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Mystery Electrical Connector

Reply #3 –
Possibly a point for reading codes?? I have one of same hanging down beside engine and close to ECM location.
JohnH
Coachless, now use aircraft. 2003 Ford Travelair TC280 class C. Super shape. Just for 1 yr .
1994 Ford E350 ClassC,total renovation inside and out. Now sold.
2000 U295  36' Cummins 350 c/w Banks Stinger, Resonator upgrade,Solar, LED lites.Residential fridge with slide out pantry. Build 5674. Sold
ex 92 GV 022C ored Cummins. Sold
ex 95 GV240 cat 3116. Sold
2017 Mini cooper s & 2016 land Rover LR2 HSE  LUX.
jhaygarth@aol.com    SKP #130098
treat everyone as you would like to be.

Re: Mystery Electrical Connector

Reply #4 –
Quote from: John Haygarth –
Possibly a point for reading codes??
Mechanical C8.3 - no computer.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Mystery Electrical Connector

Reply #5 –
It looks like a DDEC Detroit connector maybe the wiring harness was roughed in for a 6V92 Detroit and then changed to a mech cummins
91 GV U300 Unihome 40' Build 3811
6V92TA Detroit

Re: Mystery Electrical Connector

Reply #6 –
Possible...perhaps the factory wiring harness is "One Size Fits All" and has connectors built-in for every possible engine combo?
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Mystery Electrical Connector

Reply #7 –
The six speed trans is electronic.  Probably for it
"Riding and rejoicing"
Bob
1997 U320 40' Mid entry, build 5132,  wtbi ce27, 4th owner
2007 Solara convertible
2 prodeco tech outlaw ss electric bikes

1095 watts solar
08 Ls 460 and a sc430
2000 Ford F-250 superduty 4x4

Re: Mystery Electrical Connector

Reply #8 –
Quote from: Caflashbob –
The six speed trans is electronic.  Probably for it

Interesting. How does an electronic transmission mate with a mechanical engine? Does it get some parameters (such as RPM from the sensor that drives the tachometer, for example) or does  it just run in a default mode and not require external sensors?

Inquiring minds, and all that . . .
David and Carolyn Osborn
1995 U320C SE 40' Build 4726 Feb 1995
FMCA 147762
Motorcade 17186

Re: Mystery Electrical Connector

Reply #9 –
Quote from: D.J. Osborn –
Interesting. How does an electronic transmission mate with a mechanical engine? Does it get some parameters (such as RPM from the sensor that drives the tachometer, for example) or does  it just run in a default mode and not require external sensors?

Inquiring minds, and all that . . . .
They use a throttle position sensor, that send the information to the transmission brain.


The selected media item is not currently available.Bill&Doris 97 U270 36'
University of Parris Island Class of 66
Semper Fi  Build# 5174 MC#17094

Re: Mystery Electrical Connector

Reply #10 –
Ya, no problem.  Plenty of Caterpillar and Cummins mechanical engines with Allison electronic 6 speed transmissions.
Brett Wolfe
EX: 1993 U240
Moderator, ForeForum 2001-
Moderator Diesel RV Club 2002-
Moderator, FMCA Forum 2009-2020
Chairman FMCA Technical Advisory Committee 2011-2020