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OIF 650 Electrical issues
#809770 05/21/20 7:03 am
Joined: Nov 2002
Posts: 521
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Got a few electrical gremlins which I hope I can sort out on my 72 TR6C.... First is the brake light switch - takes about 3 seconds to come on when the rear brake pedal is pressed. It worked OK originally, but its now got cooler here, could this be the issue (its a NOS item). If I poke it, sometimes it comes on. Secondly, the dip beam only works occasionally. It works OK when the switch is in pieces and i press the contacts, but doesn't always when the switch is used normally. It seems as if there is some play, as i can press the switch lever in towards the handlebar. Finally, there is a 'spare' red earth wire sticking up near the battery. Its not the one that goes to the rectifier terminal and I don't think the OIF TR6Cs have the capacitor (or do they?). If so i can't see the other wire anywhere. there is no capacitor anyway.


1966 Triumph Thunderville
1970 TR6C
1972 TR6C
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Re: OIF 650 Electrical issues
tiger_cub #809780 05/21/20 10:22 am
Joined: Aug 2001
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Take the brake switch apart, study how cheap and flimsy it is, realise that if the adjustment is wrong and the spring contacts are heavily loaded then it is prone to not working, also realise that water can get in and not out, Clean it up , adjust so the switch is barely held open when the pedal is up. It should work OK for a few more months. These are V cheap and nasty, it pays to keep a spare on the shelf.

For the dip switch, open it up again, contact pressure can be tweaked by carefully bending the tab the contact is on.


71 Devimead, John Hill, John Holmes A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: OIF 650 Electrical issues
tiger_cub #809969 05/23/20 3:16 am
Joined: Oct 2008
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Adjust the rear switch so that the bolt on the pedal presses on it as squarely as possible. You can also put some dielectric grease inside to displace any water.
As Gavin said, sometimes it only takes a little gentle bending to the contact arms. However, the contacts can become worn. I have found that it sometimes helps to really clean and flux the contacts and give it a light coating of solder. Use a low setting on the iron, and work quickly to avoid melting the nylon. Just build the contacts up slightly until they make a good connection.


Stepping on others doesn't make you stand tall.

71 A65L "Zelda"
92 BMW K100rs "Gustav"
72 T120V cafe project "Mr. Jim"
72 T150V "Wotan"
Re: OIF 650 Electrical issues
tiger_cub #809999 05/23/20 1:04 pm
Joined: May 2013
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Worst problem I’m finding is the rubber isn’t lasting 5 minutes and without it the switch falls apart.


beerchug

(Display name changed for cyber security reasons)

Re: OIF 650 Electrical issues
tiger_cub #810215 05/25/20 7:14 am
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I have a few of the rear brake switches lying around which have broken mountings, so I swapped the rubber and plunger and after a bit of manually moving the internal contact, seems OK now. The handlebar switch I tried to bend the contact and got it working, but have left it in the main beam position until after i have got the vehicle inspection done (hopefully next week).


1966 Triumph Thunderville
1970 TR6C
1972 TR6C
Re: OIF 650 Electrical issues
tiger_cub #810236 05/25/20 2:47 pm
Joined: Jan 2004
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Re: OIF 650 Electrical issues
tiger_cub #810283 05/25/20 9:17 pm
Joined: Dec 2013
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DOPE
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the similar brake light switches from japanses machines are cheap and easily adaptable as well

[Linked Image from img.jpcycles.com]


https://www.jpcycles.com/product/zz...aAdAEAQYASABEgLr3vD_BwE&gclsrc=aw.ds


every day you do not take a chance is a day of your life that you will never get back.
Re: OIF 650 Electrical issues
tiger_cub #810284 05/25/20 9:27 pm
Joined: Jun 2007
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I just might buy a few of these. They're only a buck a piece. Make a right angle bracket and you're done.
(normally closed switch)

[Linked Image from i.ibb.co]

Cheers,
Bill


Bikes
1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Black Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.

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