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Wiring loom.
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Alien
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November 19, 2018 - 1:00 pm
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Hi, I have a new wiring loom for my D7 Bantam and it has wires going to a stop switch, is this a separate switch I need to get or do they mean the switch on the headlamp?? any ideas, thanks.

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Blue Heeler
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November 19, 2018 - 2:24 pm
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It`s a separate switch that bolts to the pillion rest,facing forwards with a spring attached via a small clamp to the rear brake rod,that pulls the plunger out of the switch enough to cause both contacts within said switch to make contact and create a circuit to your rear stop lamp,thus illuminating it....at least I think that`s how my D7/10/14 bikes are set up,without actually going out in the rain to the lock-up to check.

Blue

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swalsh58
St. Mary's Bay, Kent
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November 19, 2018 - 3:14 pm
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Do you mean a brake light switch as in Blue's reply above, or a kill switch as on a modern bike? (I use the term modern loosely). There is no kill switch on a Bantam though unless you fit one yourself, you just turn off the ignition switch

Current bikes......1958 D5, a 77 Suzuki GT250 and a 77 Honda CB125S. I have a 74 Kawasaki KH400 and a B175 waiting for restoration. A 1980 Honda CB400N waiting for MOT.  Everyday ride is a 2011 Harley Davidson 883 Sportster. 

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Tezza175
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December 9, 2018 - 7:47 pm
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Hi, I have been fitting a new wiring harness ( the two headlamp Lucas version). I agree with the method of fitting the brake switch. Strangely my brake light comes on with the light switch when switched on , and no other light works ! I have fitted a new battery and checked all the connections. Any ideas as to why this happens?

Terry

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sunny
Norfolk
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December 10, 2018 - 8:18 am
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the engine  has  to be   running   for  the  headlamp  to work    using   a   WYPAC   loom   so  i  think  you  have to  go  throw  the  system  to check  it  all  out          ,,,,none  of  the  3   D7   wiering   looms  from    Wypac   let  the  haedlamp  work   unless  the  motor  is  running

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GlenAnderson
Dover
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December 13, 2018 - 4:01 pm
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Tezza175 said
Hi, I have been fitting a new wiring harness ( the two headlamp Lucas version). I agree with the method of fitting the brake switch. Strangely my brake light comes on with the light switch when switched on , and no other light works ! I have fitted a new battery and checked all the connections. Any ideas as to why this happens?

Terry  

Without being able to see it I can’t be specific, but if that’s happening then you’ve definitely connected something up wrong. 

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mikef
Chatham Kent
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December 13, 2018 - 8:16 pm
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Hi Sunny.
        I am getting quite confused with this D7 wiring, I have seen many early single switched (pre 1963) models with the wiring diagram attached.
The headlamp is battery powered.
Can you explain?

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mikef
Chatham Kent
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December 13, 2018 - 9:23 pm
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Hi Tezza.
       If you switch the light switch to the "L" position then the parking lamps should come on. Is it possible that you have the brake light and normal rear lights swapped over?

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mike p5xbx
E-Sussex
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December 13, 2018 - 11:29 pm
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The single switch D7 can be DC Battery headlight
or AC depending on the wiring harness used
the difference is in the harness switch connections and two green wires to the rectifier
DC headlight wiring diagram with headlight ON connections in Red
DC.JPG

sp_PlupAttachments Attachments

D? - D10- D14 Bantams 350 AJS -500 Triumph http://bsanotru.....lfire.com/

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sunny
Norfolk
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December 14, 2018 - 2:48 pm
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HI  MIKE    P/M  sent  in    wier H/L      

Changes    to  the  geny  coils  &   harnes / loom    mean    the  4   batery   systems  befor  the  D 7  batery systems  &  the  D7   are NOT  intechangable   without  some  loos  in  power  the   sysetem  in   post  9    ran along  side    the  D7  sysetem    that  ended  in  1966

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Alien
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December 24, 2018 - 5:24 pm
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Hi, I have a new wiring loom for my D7 and have identified all of the cables except one which is red and white and it says on the diagram Control Breaker, any idea where this one goes to ?? Thanks.

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sunny
Norfolk
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December 27, 2018 - 2:07 pm
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hi  Alien    so  are  you saying   that  you  know  were  all  the  uther   wires  go  to    ?  &  if  you  do  please  tell us    were  each end of  the  white  & red  wirer  is     on your  bantam   as   two  collor  cables   are  not  part  of  the    bantam dyagrams    ,A  control  braeaker  is  a  FUSE  or  a  SWITCH ,,

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Mick W
Chester/ North Wales Flintshire Border
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December 27, 2018 - 2:18 pm
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Alien said
Hi, I have a new wiring loom for my D7 and have identified all of the cables except one which is red and white and it says on the diagram Control Breaker, any idea where this one goes to ?? Thanks.  

If memory serves me well, I think the red and white wire is in the same branch as the three generator wires and is for the contact breaker. Ie points

 Mick

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Alien
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December 29, 2018 - 5:53 pm
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The red and white wire comes up together with the generator cables, the other end goes to the coil and it is also showing in the ignition switch socket. 

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Mick W
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December 29, 2018 - 7:32 pm
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To the points.  They have called it control breaker instead of contact breaker. Typical foreign spelling being incorrect

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sunny
Norfolk
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December 30, 2018 - 9:13 am
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thanks  MICK       i  lern  something   every  day     its  a  shame   the  speling     is  as  bad  is  mine   a  so  with  help  from  MIck   the  White & red  wier    REPLACES      the  MAROON  on  the  wypac  looms   dyagram   

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Alien
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January 1, 2019 - 5:16 pm
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Thanks for the information, very helpful,

Roger.

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Tezza175
Newark , Notts.
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January 12, 2019 - 6:29 pm
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Hi, I mentioned in a previous post that I was fitting a new lucas wiring loom ( two switch version ) to my bantam d7 super. 

Although it is registered as 1961 model which should have a single switch on the nacelle , ironically it has been changed to this version during its lifetime !.

The loom has now been fitted and connected i think correctly as per the diagram supplied, but all the headlight bulbs do not work as I expected, even the pilot lamp in the non running position.The tail and stop light are fine, and all points on route are earthed and I have checked with a multimeter.

Any help would be appreciated. Cheers  Terry  

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JulianS
North Dorset
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January 12, 2019 - 7:11 pm
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I presume you are trying the headlight with engine running?

The twin switch D7 set up is, as far as I recall, battery for tail light, stop light, horn and coil ignition and AC headlight direct from generator only when engine running.

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sunny
Norfolk
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January 12, 2019 - 9:39 pm
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Terry is the HT coil under the seat  or in the geny  as you  may  useing  the Singal switch geny . Thats not a 2 switch geny 

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