- Joined
- Jun 4, 2013
- Messages
- 12
I have a really wierd ignition switch on my 74 850 Roadster.
I bought the bike last fall after it had been stored since 1994. It wasn't in the best of shape, but I did get it started and rode it around the block before pulling it in the garage for a winter of rebuild.
One thing that was weird was that it only had a two position key switch instead of what I believe should be a four positon switch. What made it even more weird is that the only to remove the key was to move it to the own position. Kind of makes it hard to take the key out at the local donut store....lol!
Anyway, I finaly got around to having a look at the switch earlier today. The service manual that I have is for 850s and 750s from 1970 on. It has wiring diagrams in it, one pre 71, one for 71 and one for 72 and 73. I assumed that the 74 was the same as the 73 since my understanding is that it was not until 75 that the elctric start was introduced. Anyway, when I look at the main switch on the wiring diagram it has it has four connectors. Mine has a five spade connectors on it and since the only markings on it say "made in the USA" I'm presuming it was something that was installed by the previous owner. All of the wires are the same as in my diagram. Double Brown/Blue on one connector, double white on one conector, double brown/ green on one connector and a single blue/yellow on another. Here is the kicker. My switch also has a fifth connector with a white/purple on it. I've traced it to a coil .
A few questions.
Does any one have any idea of what the white /purple is for ? Does anyone have a proper wiring diagram for a 74 850? And I obviously need to get a switch that I can get the key out of without having the power turned on to the bike. Should I go with the stock lucas switch or are there better replacements?
Thanks for the help!
I bought the bike last fall after it had been stored since 1994. It wasn't in the best of shape, but I did get it started and rode it around the block before pulling it in the garage for a winter of rebuild.
One thing that was weird was that it only had a two position key switch instead of what I believe should be a four positon switch. What made it even more weird is that the only to remove the key was to move it to the own position. Kind of makes it hard to take the key out at the local donut store....lol!
Anyway, I finaly got around to having a look at the switch earlier today. The service manual that I have is for 850s and 750s from 1970 on. It has wiring diagrams in it, one pre 71, one for 71 and one for 72 and 73. I assumed that the 74 was the same as the 73 since my understanding is that it was not until 75 that the elctric start was introduced. Anyway, when I look at the main switch on the wiring diagram it has it has four connectors. Mine has a five spade connectors on it and since the only markings on it say "made in the USA" I'm presuming it was something that was installed by the previous owner. All of the wires are the same as in my diagram. Double Brown/Blue on one connector, double white on one conector, double brown/ green on one connector and a single blue/yellow on another. Here is the kicker. My switch also has a fifth connector with a white/purple on it. I've traced it to a coil .
A few questions.
Does any one have any idea of what the white /purple is for ? Does anyone have a proper wiring diagram for a 74 850? And I obviously need to get a switch that I can get the key out of without having the power turned on to the bike. Should I go with the stock lucas switch or are there better replacements?
Thanks for the help!
