[Healeys] Electrical Relays for Lighting System

[Bob Spidell]

News to me (and very PC). 'Master-slave' is still commonly used in electronics and, among other things--database design: http://dev.mysql.com/doc/refman/5.1/en/replication.html 

To be correct--not PC--'primary-secondary' is not the same relationship as 'master-slave.' In some cases, the distinction is critical. 

I'd rather be C than PC. 


bs 

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Bob Spidell - San Jose, CA 




Not to seem to0 "PC" but the terms "modern" and "slave" seldom seem to appear in the same sentence anymore. Usually "slave" has been supplanted by "secondary". 

Best--Michael Oritt 
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In a message dated 10/29/2009 11:15:13 A.M. Eastern Daylight Time, bspidell at comcast.net writes: 

Just noted in _Auto Restorer_ there is a modern, modular, solid-state equivalent of a bank of relays available for retrofitting older cars. Essentially, one control module sends low voltage signals to remote 'slave' modules that in turn switch battery power to lights, etc. (of course, this is how it's done in new cars). 


bs 

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Bob Spidell - San Jose, CA 



The artickle is spot on and it is a very worth wile and simple mod for 
all heavy users: headlights, spot/fog lights, horns, heater motor, fan 
motor, wipers etc. 
It has been covered several times on this and various other lists. 
Kees Oudesluijs 


Ron Ray schreef: 
> Folks, 
> 
> A friend has asked for opinions on the merits of installing relays to feed 
> the headlights on a Bugeye Sprite. He read an article online that claimed 
> relays would decrease the amount of current going through the ignition 
> switch. The article stated that there is a lot of resistance in the 
> headlight switches that drops the voltage and creates heat, thus the switch 
> fails earlier, and the headlights are not as bright as they would be with 
> relays. The article also claimed that with the relay, the voltage goes 
> straight from the battery to the lights so the current carried by the switch 
> is lower so it last longer, and the lights are brighter. 
> 
> I can forward the article to anyone interested. 
> 
> Thanks in advance for y our thoughts. 
> 
> Ron