Wiring Question R69 Hi/lo Beam/Horn switch

808Airhead
Posts: 1066
Joined: Wed Aug 05, 2009 9:06 pm

Re: Wiring Question R69 Hi/lo Beam/Horn switch

Post by 808Airhead »

Are you getting +6 volts at #56 terminal with switch in "lights on" position? The contact 56 on the terminal board should be sendiong power to the switch on the handlebar.
Thomas M.
R69s - R60/2 - R67/2 - R51/3

agentsjrc
Posts: 10
Joined: Thu Jan 05, 2017 10:22 am
Location: Sussex, England

Re: Wiring Question R69 Hi/lo Beam/Horn switch

Post by agentsjrc »

Hi Thomas and Kurt…I’m getting nothing at 56 with the switch on for lights. I AM getting +6.11 volts at 30/51, key in or out, lights on or off. Battery tests at 6.25 volts. Thanks!
Currently on an 1960 R60 and a 2016 F800GS. Previously: 1973 R75/5, 1977 R100, 1982 R100T

agentsjrc
Posts: 10
Joined: Thu Jan 05, 2017 10:22 am
Location: Sussex, England

Re: Wiring Question R69 Hi/lo Beam/Horn switch

Post by agentsjrc »

As I was typing out my response to you guys, it occurred to me what might have happened.

The power was clearly coming in to the board at 30/51 and not getting to 56. When I looked at the wiring diagram I couldn't work out how the power got there, but when I looked at the board closely, there's a coarse wire soldered along the edge of the board from 30/51 (I'm assuming this is standard? :-) That wire was attached at 30/51 with a blob of solder which had vibrated apart and while it looked like the wire was still attached, with a magnifying glass it was clear the solder had come apart. When I pushed the coarse wire back on to 30/51, everything works.

Given the headlight shell gets a lot of vibration, this arrangement seems odd to me...like I say, is that standard, and if so is there a way to improve on it other than simply resoldering and waiting for it all to vibrate apart again?

Thanks to everyone who tried to help. I've been lurking here a long time, but used to really value and admire the advice and help I got from guys like Duane and Oke back in the dark ages of the 1990s when I had my first /5 in San Francisco. Over in the UK, with Bob Porecha and others having retired, it's very difficult to find good help with /2 problems. Indeed, almost impossible. Thanks again to all.
Last edited by agentsjrc on Tue May 10, 2022 1:12 pm, edited 1 time in total.
Currently on an 1960 R60 and a 2016 F800GS. Previously: 1973 R75/5, 1977 R100, 1982 R100T

agentsjrc
Posts: 10
Joined: Thu Jan 05, 2017 10:22 am
Location: Sussex, England

Re: Wiring Question R69 Hi/lo Beam/Horn switch

Post by agentsjrc »

The wire in question…
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Currently on an 1960 R60 and a 2016 F800GS. Previously: 1973 R75/5, 1977 R100, 1982 R100T

agentsjrc
Posts: 10
Joined: Thu Jan 05, 2017 10:22 am
Location: Sussex, England

Re: Wiring Question R69 Hi/lo Beam/Horn switch

Post by agentsjrc »

Alas, no joy in mudville...

As soon as I pushed the horn button with the lights on, the fuse blew (5amp, on the battery)-- just how I remember the lights going out sometime ago.

Also, I had no taillights, only the headlight, brake light, horn-- although the hi/lo switch worked. Something funky going on...the work continues...
Currently on an 1960 R60 and a 2016 F800GS. Previously: 1973 R75/5, 1977 R100, 1982 R100T

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