Need Wiring Help For 12 Volt Motor

Gallery, Projects and General > How do I??

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vtsteam:
Snub, sorry -- I think I see your problem -- the circles (hollow dots) are contacts inside the relay. Black dots are the lugs outside of the relay where you make your connections to it. The arrow represents the movable part of the switch.

So there are:

2 lugs on the relay for the coil

and 6 lugs on the relay -- for the two switches.

each switch has a center movable part, and two contacts, one normally closed, and one normally open.

vtsteam:
Here's a picture of a relay:

It's a DPDT relay without a case. You can see the two different switches. I've labeled the parts. The upper contacts are the NC ones because the spring is holding the ramature's contacts up against them. The lower contacts are the NO contacts because the armature contact is not touching them.

If the coil is energized, the armature pulls down and breaks the connection with the upper pair of contacts, and makes a connection with the lower pair.

vtsteam:
Relay contacts without and with coil energized. The middle contact is the armature:

Schematic version:

vtsteam:
Here's a simple relay (SPDT), and a DPDT relay.

Notice there are 8 connections to a DPDT relay.

2 to the coil

NC, NO, and armature to one switch

and

NC, NO, and armature to the second switch.

snub:
Believe it or not, I am grasping everything..........except the connections to the relays. Once we get through this we will be good to go and you can get back to your own projects. Unless you are up to your waist in snow. Here is a picture of the relays I am using and their terminal connections. Got to love those clear plastic cases, you can see the guts inside. No guessing as to the proper hookup.

Update:
Don't bother clicking on the picture. The diagram is wrong.

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