Can a relay be wired to turn a circuit off?

Gotta love that wiring . . .
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toplessexpat
Posts: 1183
Joined: Fri Aug 31, 2012 2:29 am
Your car is a: 1976 Spider 1800
Location: Houston, TX

Re: Can a relay be wired to turn a circuit off?

Post by toplessexpat »

I'm going to have a quick stab on the wiring diagram.

If you want good high power to the headlights.... I would take it from the alternator stud!

EDIT: Here's a quick cut of a pair of diagrams for this...1) city lights switched with dips/mains, 2) city lights always on with parking lights/side lights.

https://www.dropbox.com/s/re6oionqk6l0s ... t.pdf?dl=0
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Many classic Fiats - it's a disease!
www.mirafiori.com
njoconnor
Posts: 614
Joined: Thu Jul 05, 2012 7:06 pm
Your car is a: 1972 124 Spider

Re: Can a relay be wired to turn a circuit off?

Post by njoconnor »

Double wow. THAT is cool! Thanks!!

The Greg Smith harness I have has the two relays for the headlamps (along with all the assorted wiring....worth every penny!). So, looks like one additional rely, using both headlamp feeds from the ignition switch as triggering current on 85 and/or 86, and then running the city lamp closed feed off 87/87A ought to do the trick (parking lampo power into 30, of course).

Well, then. Brakes and starter first, then suspension, then the headlamps...with follow up when done.

Neil
Neil O'Connor
Madison, WI
72 FIAT 124 Spider
12 Jeep Grand Cherokee Overland Summit
14 Ram 1500 Laramie Longhorn Eco-Diesel
ex-71 FIAT 124 Coupe
and a host of Audi's, Saabs, VW's, MOPAR's, Fords, and a Bimmer....
User avatar
toplessexpat
Posts: 1183
Joined: Fri Aug 31, 2012 2:29 am
Your car is a: 1976 Spider 1800
Location: Houston, TX

Re: Can a relay be wired to turn a circuit off?

Post by toplessexpat »

Yep -

Although it is pretty academic .... as Bernie said - when the lamps are on, you can't see the city lights. That said - KNOWING you can do it is nice :)

One MINOR thing - worth checking whether in your jurisdiction they're allowed to turn off or not!

A
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Many classic Fiats - it's a disease!
www.mirafiori.com
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