By joining you will help ensure that we can continue to provide this service
JOIN HERE!
Hello, I need the wiring diagram for terminal plate for a R27
Hello, I need the wiring diagram for terminal plate for a R27
By the way he got three cables from the new plate that are left unconected, grey, green, and yellow with red stripe,
Thanks in advance
- wa1nca
- Posts: 1228
- Joined: Thu Sep 27, 2012 5:15 pm
- Location: Ashfield Ma
- Has thanked: 10 times
- Been thanked: 17 times
Re: Hello, I need the wiring diagram for terminal plate for a R27
https://www.bmwclassicmotorcycles.com/p ... agram-r27/
terminal 15/54 lower right side of board in this diagram is hot when key is pushed in any position to power ignition coil,horn,and feed to brake light switch
One wire on the ignition coil goes into the front of the engine and is connected to the points
the other wire to the coil needs to go to 15/54 terminal on the switch board for power to the coil when key is pushed in
see that you have 6 volts at the coil when the key is inserted if not find the wire going to the coil and it is connected to 15/54
Tommy
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA
Re: Hello, I need the wiring diagram for terminal plate for a R27
- schrader7032
- Posts: 9040
- Joined: Fri Oct 27, 2006 3:00 am
- Location: San Antonio, TX
- Has thanked: 2 times
- Been thanked: 34 times
Re: Hello, I need the wiring diagram for terminal plate for a R27
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
- wa1nca
- Posts: 1228
- Joined: Thu Sep 27, 2012 5:15 pm
- Location: Ashfield Ma
- Has thanked: 10 times
- Been thanked: 17 times
Re: Hello, I need the wiring diagram for terminal plate for a R27
The odd colors are not original
The switch board was used in many other bikes (Jawa ect) so just cap off the extra ones
#30/51 large red from regulator and battery positive
# 31 large brown ground to engine battery negative (looks like yours is a large black)
# 2 not used on R27,used to kill ignition with magneto
# 56 power to headlight dimmer switch
# 58 power to rear running light, accessory socket,and running light in headlight
# 15/54 power to coil,horn,and brake light switch
# HO no internal connection on switch board, connects other horn wire to wire from horn switch
Do you still have no spark and checked that coil has power when key is down
Tommy
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA
- jwonder
- Posts: 784
- Joined: Wed Nov 23, 2016 7:50 pm
- Location: Long Island, New York
- Has thanked: 3 times
- Been thanked: 7 times
- Contact:
Re: Hello, I need the wiring diagram for terminal plate for a R27
The main library is at: https://vintagebmw.org/library/
The R27 owners manual that has a wiring diagram is here: https://vintagebmw.org/library_data/R27 ... h_1961.pdf
And the workshop manual has a GREAT wiring diagram on page 151: https://vintagebmw.org/library_data/Wor ... rm_R27.pdf
I hope this helps!
Vice President, Vintage BMW Motorcycle Owners
2022 BMW Friend Of the Marque
Long Island, New York
- schrader7032
- Posts: 9040
- Joined: Fri Oct 27, 2006 3:00 am
- Location: San Antonio, TX
- Has thanked: 2 times
- Been thanked: 34 times
Re: Hello, I need the wiring diagram for terminal plate for a R27
'78 R100/7 '69 R69S '52 R25/2
Fast. Neat. Average. Friendly. Good. Good.
- wa1nca
- Posts: 1228
- Joined: Thu Sep 27, 2012 5:15 pm
- Location: Ashfield Ma
- Has thanked: 10 times
- Been thanked: 17 times
Re: Hello, I need the wiring diagram for terminal plate for a R27
Left hand switch is wired for headlight dimmer and headlight flasher
Right hand switch is wired for blinker/horn
2nd diagram page 149 shows:
Left hand switch is wired for headlight dimmer/horn
Right hand switch is wired for blinker/headlight flasher
Tommy
54 R51/3, 55 R50/Velorex 560 sidecar, 64 R27, 68 R69US, 75 R75/6
Ashfield, Ma
USA
- Flx48
- Posts: 262
- Joined: Sun Oct 25, 2020 3:11 pm
- Location: NW CT
- Has thanked: 2 times
- Been thanked: 6 times
Re: Hello, I need the wiring diagram for terminal plate for a R27
Hi Hugo-
To be clear, are the 3 wires (grey, green, and yellow w/red stripe) that you want to identify the 3 wires that came already soldered to the new terminal board?
If so, please identify from which terminal each color originates.
Best-
George
-
- Posts: 6
- Joined: Wed Jan 19, 2022 5:14 pm
- Location: Danville, IN
Re: Hello, I need the wiring diagram for terminal plate for a R27
The problem is getting wiring that does not color match the original harness especially when this switch plate is used on multiple model BMW's and possibly on other makes of motorcycles. It comes down to rather deliberate visual and/or spark chasing by ringing out the wiring. Personally, I am also converting to the VAPE 12v electrical system which will make things even more fun. Would be curious to know if this had been previously resolved as the thread just dead ended.