A A A
Avatar

Please consider registering
Guest

Search

— Forum Scope —






— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

Register Lost password?
sp_Feed sp_PrintTopic sp_TopicIcon
D7 Single switch on headlight
Avatar
gpzdave
Second Gear User
Site Member
Forum Posts: 6
Member Since:
September 1, 2021
sp_UserOfflineSmall Offline
1
September 1, 2021 - 11:33 am
sp_Permalink sp_Print

Hello

D7 1959 175.

No battery. with a single switch on the headlamp cowl. switch has L and H on it.. am suspecting High and Low.

but also has, what looks like a high/low switch on left hand handle bar, with horn button.

the problem i seem to have i think this is the wrong switch as it has a red/black wire from the switch running to the side panle, its not connected to anything. but the book, Haynes, shows no red/black wire in any of the wiring diagrams.

Am I correct in thinking this is not the right switch?

thanks for your help 🙂

its been fitted with electronic ignition.

Avatar
Stoo63
GLASGOW
Area Rep
Forum Posts: 1372
Member Since:
April 19, 2018
sp_UserOfflineSmall Offline
2
September 1, 2021 - 11:23 pm
sp_Permalink sp_Print

Hi Dave and welcome to theForum. IncidentallytheGPZ500s isone of my all time favourite bikes. Such great fun to ride.I've  got one in bits waiting to be brought back to life. 

Ahhh, theD7 switches and "improvements" by previous owners..... One of our most common questions, I'm afraid, and no definitive answer. There is, however, a vast amount of previous(see below)

You will find just about everything you could ever want on the Forum via the FAQs and technical sections;  ** Please log in to view **

Have a really good nose around the forum and enjoy yourself. Looking forward to seeing your progress.

Good Luck!

All the best,

Stewart

'49 LE; '50 D1 Lucas; '55 D3 Battery; '58 Square Four (project); '59 D1 direct lighting; '60 5TA; '62 BSA Sunbeam; '72 Mobylette; '76 FS1-E; 

Avatar
stubaker58
Sunny Felixstowe
Area Rep
Club Member
Forum Posts: 756
Member Since:
June 13, 2015
sp_UserOfflineSmall Offline
3
September 2, 2021 - 7:31 am
sp_Permalink sp_Print

Hi Dave(?)

The switch on the headlight is not a dip switch, H = headlight and L = sidelights.

A ‘normal’ Bantam would then have the dipswitch and horn on the handlebars. I’ve almost no experience of how electronic ignition is wired but is it possible that the red/black wires are for a kill switch? Does the handlebar switch have one or two buttons, and what colour are they?

Regards.

“There’s nothing new under the sun”.

Avatar
sunny
Norfolk
Top Gear User
Club Member
Forum Posts: 1929
Member Since:
January 9, 2013
sp_UserOfflineSmall Offline
4
September 2, 2021 - 10:26 am
sp_Permalink sp_Print

no  batery  HOLDER     and  a  ruber    boulb   HORN     wiering  dyagram  on  page 80     [ Haynes ]  D 7 dip swich  on page  84    horn   not  wiered 

main switch    H is headlanp     L is pilot 

thers  NOT   a  wiering  dyagram  in  the  Haynes  book  for  the  1959  Batery  modle   as  page  81  is NOT   for  D 7  

the  [  BLACK  } horn  botton on   D  7   was  not  used  at all   you  can  wier  it for  a cutout

so  it sounds  like  yours  need a  new  loom/ harness 

Avatar
gpzdave
Second Gear User
Site Member
Forum Posts: 6
Member Since:
September 1, 2021
sp_UserOfflineSmall Offline
5
September 2, 2021 - 11:27 am
sp_Permalink sp_Print

Cheers for welcome Stewart...

The GPZ bit is from when i had a 1100 B2 with an 1166cc bigbore kit and vance n hince exhaust.. i do miss that bike..

Any hoo.. will check on the info pages you posted, again cheers.

but am more interested in the fact the switch has a red, with black tracer wire from the switch, and yet is not listed in the manual. could it be from another BSA ?? or other Brit i suppose.. more investigation i sus..

 

Dave

Avatar
cocorico
Central France
Top Gear User
Site Member
Forum Posts: 3559
Member Since:
June 23, 2013
sp_UserOfflineSmall Offline
6
September 2, 2021 - 11:39 am
sp_Permalink sp_Print

Don't trust Haynes manuals - imo they are guidance only, no good for detail. The addition of electronic ignition throws a whole bag of spanners into the problem. I think you need to go back to basics and work your way through to find what goes where.

For a start, have a look at the electronic ign kit, find it's wiring diagram to see what changes that required.

Avatar
gpzdave
Second Gear User
Site Member
Forum Posts: 6
Member Since:
September 1, 2021
sp_UserOfflineSmall Offline
7
September 3, 2021 - 11:44 am
sp_Permalink sp_Print

yes and no to the haynes manual.... having used them before..

So lets start again. having a genuine BSA D7 owners manual with wiring diagrams in the back for direct lighting and battery coil ignition both of which dont show a red, with a black tracer wire coming from the switch..

if i do trace it back its just cut off in the side panel with a green and a + earth translucent wire... just relly need to know if this is a gen bantam switch from other model or maybe other bsa, or brit machine..

Avatar
stubaker58
Sunny Felixstowe
Area Rep
Club Member
Forum Posts: 756
Member Since:
June 13, 2015
sp_UserOfflineSmall Offline
8
September 3, 2021 - 1:11 pm
sp_Permalink sp_Print

Can you post a picture?

“There’s nothing new under the sun”.

Avatar
sunny
Norfolk
Top Gear User
Club Member
Forum Posts: 1929
Member Since:
January 9, 2013
sp_UserOfflineSmall Offline
9
September 3, 2021 - 3:06 pm
sp_Permalink sp_Print

yes  Dave  please  read  [ Ducun   switch   in  the  F A Q  ]  for  D 7  info   is  it  the  pocket  insrution book  you  have    and  not  a  manual  

the  trece  color  wiers  wer  not  used  on  bantams  from   B S A  

Avatar
Number6
Lincolnshire
Top Gear User
Club Member
Forum Posts: 575
Member Since:
January 18, 2020
sp_UserOfflineSmall Offline
10
September 3, 2021 - 7:36 pm
sp_Permalink sp_Print

The Haynes manual I bought in 1975 when I started on the D3, was really good so far as I remember – wish I'd kept it because I bought a new one last year, seems a shadow of its former self, for a start it's thinner, seems like there's a bunch of stuff missing that I'm sure was in the old one. freaked-out_gif

Mike H --

Murphy's 4th law of motion states that any small object that is accidentally dropped will immediately hide itself under a larger object.

Avatar
mike p5xbx
E-Sussex
Top Gear User
Site Member
Forum Posts: 1688
Member Since:
June 15, 2012
sp_UserOfflineSmall Offline
11
September 3, 2021 - 11:29 pm
sp_Permalink sp_Print

the standard wiring colours may have been modified with the fitting of the electronic ignition.
Would be helpful if you could post a photo of it, or what make it is

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

Avatar
gpzdave
Second Gear User
Site Member
Forum Posts: 6
Member Since:
September 1, 2021
sp_UserOfflineSmall Offline
12
September 7, 2021 - 11:49 am
sp_Permalink sp_Print

DSC_0054.JPGThis is the wiring from the switch in the headlamp nacelle.. the red/black tracer connects to nothing. nether does the translucent, but am guessing is an earth.

sp_PlupAttachments Attachments
Avatar
cocorico
Central France
Top Gear User
Site Member
Forum Posts: 3559
Member Since:
June 23, 2013
sp_UserOfflineSmall Offline
13
September 7, 2021 - 1:55 pm
sp_Permalink sp_Print

You still haven't told us what electronic ignition system is fitted. Have you used the search suggested by Stoo? Try this: ** Please log in to view **

Avatar
gpzdave
Second Gear User
Site Member
Forum Posts: 6
Member Since:
September 1, 2021
sp_UserOfflineSmall Offline
14
September 8, 2021 - 1:27 pm
sp_Permalink sp_Print

thank you all for your replys

its not the electronic ignition i am worried about, not worried about anything really..

all i need to know is this the right switch for a D7 Bantam, 1959.

have checked all the wiring diagrams i can find and checked the little green handbook, for a D7, from BSA, with wiring diagrams in, one for battery and one for direct lighting. and the Haynes manual wiring diagram and non of them show a switch with a red, with black tracer on it...

Logic would dictate that this is the wrong switch but i would just like clarification from people who will have more knowledge than i on D7 Bantams..

Cheers

Avatar
Jim
Second Gear User
Site Member
Forum Posts: 35
Member Since:
September 4, 2020
sp_UserOfflineSmall Offline
15
September 8, 2021 - 2:05 pm
sp_Permalink sp_Print

Hi,

The electrical system is a bag of worms as much can have been changed over the years...

You have the right switch, and the electrical /charging system is controlled by this switch. What may have changed is the knob on top - all the switches are the same for single/twin switch models but the lettering changed

The translucent wire is an earth, but also it serves an important function in that it is a resistance wire that prevents the battery from overcharging in the absence of any other form of regulation.

The H/L on the switch is for the charging (at least on earlier models) - H for headlights (dip is controlled from the h/bar) and L is for charging the battery up if it is low as well as sidelights.

Can't help you with red/black wire, sorry!

Cheers,

Jim

Avatar
sunny
Norfolk
Top Gear User
Club Member
Forum Posts: 1929
Member Since:
January 9, 2013
sp_UserOfflineSmall Offline
16
September 8, 2021 - 2:40 pm
sp_Permalink sp_Print

hi  Dave  the    D 7   single  switch  wiering dyaram  is   NOT   in the  Haynes  Manual  please  read  Post  no 4   & your   wiering  has been  changed  the switch  looks as if  it  is  the crect one  but  its  hard  to  see  coz its in  a wiering   socket   NO  trace  colors  were  used  on the  bantam   , wypac  used  the  plug  in   headlamp  switch   on  most   of the 14 or  so  macks  of  motorcycle the  systems   were  fited  to  , you  need  to  do  a  serch   using  the  SPEC  number   on  the   wypac  generator  , a  HT  coil    under  the  seat  was  not  fited  til   1964   0n   D 7  hope   all  this  helps  

Avatar
Jim
Second Gear User
Site Member
Forum Posts: 35
Member Since:
September 4, 2020
sp_UserOfflineSmall Offline
17
September 9, 2021 - 12:54 pm
sp_Permalink sp_Print
sp_PlupAttachments Attachments
Avatar
Jim
Second Gear User
Site Member
Forum Posts: 35
Member Since:
September 4, 2020
sp_UserOfflineSmall Offline
18
September 9, 2021 - 1:06 pm
sp_Permalink sp_Print

And the AC version with resistor wireWipac-AC-circuit-with-resistor.jpg

Avatar
cocorico
Central France
Top Gear User
Site Member
Forum Posts: 3559
Member Since:
June 23, 2013
sp_UserOfflineSmall Offline
19
September 9, 2021 - 1:53 pm
sp_Permalink sp_Print

gpzdave said
...Logic would dictate that this is the wrong switch...

Not entirely. Logic would include an OR gate - Either wrong switch OR wrong loom.

Forum Timezone: Europe/London

Most Users Ever Online: 223

Currently Online:
6 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

cocorico: 3559

Cornish Rooster: 2917

Blue Heeler: 2434

bart: 2433

David Dale: 2144

Sprung Chicken: 2121

sunny: 1929

Piquet: 1846

Mags 1: 1753

mike p5xbx: 1688

Newest Members:

Cemoto

Forum Stats:

Groups: 9

Forums: 48

Topics: 10915

Posts: 96046

 

Member Stats:

Guest Posters: 1367

Members: 3506

Moderators: 0

Admins: 3

Administrators: Bantam-Super, JMD, Stoo63