 Custom wiring Tech Advice needed
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Hi all, I've fitted some custom controls which included switches. They are the small button type. They only make contact when the button is depressed  . This isn't any good to switch between low and main beam, so I need to use some type of relay. Anybody know what I need to do? Thanks Simon
The path of excess leads to the Palace of Wisdom
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Re: Custom wiring Tech Advice needed
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Joined: Apr 2007
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A relay won't do any better than the switches you have now. I'm afraid you'll need to track down some on/off switches instead of the momentary ones you have now. Check your local electronic stores they should be a fairly reasonable price. If you are going to use the mini switches to run your headlights you may also need a relay as well. The guy at the store will know if you tell him what you are doing exactly. Hope this helps.
1982 Pontiac Trans Am...K.I.T.T. in progress.
"It looks like Darth Vaders bathroom in here..."
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Re: Custom wiring Tech Advice needed
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Joined: Jan 2005
Posts: 1,459 Likes: 1
Learned Hand
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Learned Hand
Joined: Jan 2005
Posts: 1,459 Likes: 1 |
I will try and explain in words. You will need a relay for sure and you will need one momentary contact switch to operate the relay as normal, say to turn on the high beam. you also want this relay to latch on, so take a link from the output to the lamp and connect it to the relay coil, so that when the relay is operated by the momentary switch it latches on, now if this link wire is connecteed through another momentary switch that is normaly closed the relay will stay on untill this switch is pressed. so you would have two press switches, press one you get high beam press the other you go back to low beam. Might be easier to replace the switch in your custom holder with a latching switch if you can get one to fit in, maplins might be able to help, that way you only need one switch, but you would still need a relay Hows that. 
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Re: Custom wiring Tech Advice needed
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Joined: Aug 2005
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Quote:
I will try and explain in words. You will need a relay for sure and you will need one momentary contact switch to operate the relay as normal, say to turn on the high beam. you also want this relay to latch on, so take a link from the output to the lamp and connect it to the relay coil, so that when the relay is operated by the momentary switch it latches on, now if this link wire is connecteed through another momentary switch that is normaly closed the relay will stay on untill this switch is pressed. so you would have two press switches, press one you get high beam press the other you go back to low beam.
Might be easier to replace the switch in your custom holder with a latching switch if you can get one to fit in, maplins might be able to help, that way you only need one switch, but you would still need a relay
Hows that.
Nicely put 
I couldn't figure out how to word it 
Cheers
Steve
CHAOS, MAYHEM, DISORDER ................................ my work here is done
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Re: Custom wiring Tech Advice needed
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Joined: Jul 2008
Posts: 1,440
Learned Hand
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Learned Hand
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I think you have three choices:
A.) Replace the switch with a push-on/push-off type
B.) Install a latching relay
C.) Install a solid-state control and an auto relay
If it were me, I would do the last one. It's not too difficult to solder together a CMOS flip-flop and darlington transistor to drive a relay. All the parts are readily available, and the entire control could be built for less than $10, including the relay (they're usually about $5).
'08 America Blue/White; Custom Headlamps, Custom Lowers, Clearview 20", Bafflectomy
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Re: Custom wiring Tech Advice needed
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Joined: Mar 2008
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We seem to be forgetting chaps, that I'm a little bit thick! My brain started to leak from my ears about half way through the first set of directions.
I want to keep it as simple as possible, so I guess option three of the last post would suit, cos at least it will only take up a single switch.
Dumb as I am, when it comes to interpreting lengthy descriptions (very well written though it undoubtedly was) has anybody got a circuit diagram, just showing the components and pinouts?
Cheers Guys
The path of excess leads to the Palace of Wisdom
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Re: Custom wiring Tech Advice needed
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Joined: Aug 2005
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Loquacious
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Loquacious
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Where do you live Simon? Might be someone near you to help out.
Erwin
05 America
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Re: Custom wiring Tech Advice needed
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I'm in the UK in Bracknell. If anyone has a diagram and a parts list, it'd help.
The path of excess leads to the Palace of Wisdom
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