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Low voltage wiring??


adsm08

Senior Master Grease Monkey
Supporting Member
Article Contributor
Ford Technician
TRS 20th Anniversary
Joined
Sep 20, 2009
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34,623
City
Dillsburg PA
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1987
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4.0 V6
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Manual
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31X10.50X15
Ok, I know we have a few contractors and construction guys here, and a few who just know lots of stuff, so I got me some questions.

Wife and I are looking at a house. Her uncle who is a contractor went out to look with us yesterday and said he didn't see anything too terrible about it. I trust Sam to not steer us wrong, so I'm not too worried, but he did have one potentially large concern. About half the lights in the house don't work.

The house was built when low voltage wiring was in common use because it was cheap. Sam thinks that most of the issues with the lighting is bad relays because you can't feel them click when you hit the switch. I understand how the low voltage system works, but these relays aren't cheap. We may be looking at a grand just to get all the lights working (if relays are the only problem).

My question, for those of you who are familiar with this system is: How often do these things burn out? They can be upwards of $80 a pop. If they usually go bad in a year or two I am gonna be a lot less interested in this house.

If they usually last for 20 years, I can deal with that.
 
Make sure the control circuit has power before assuming a bad relay. Relay durability is difficult to define, but depends on many things, including proper power supply, relay construction, and system type.
 
Well I'm honestly not worried about what is wrong right now. If we make an offer all the lights working will be one of the conditions of purchase, so if its a wire or power issue it's gonna have to be fixed before I buy the place.

I was more asking about relay life so that I'm not running blind into an electrical system that is going to end up costing me a small fortune every few years just to keep my lights working.
 

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