Thread: Two way switch set up ?

Originally Posted by maca

There are "Ratcheting" type latching relays available where this will work (I had a quick look for a "Ratcheting" type latching relay in the Farnell cattledog but didn't come up with anything), however the relay you suggested seems to be a "set/reset" type latching relay.
Which means you will need an "On" and a "Off" switch at each end, totaling 4 switches, or use the extra contacts on the relay to select which coil needs to be used I.e. (But be fast on the switch or the relay will oscillate)


Also if you want a larger load just use the baby relay to drive the coil on a larger relay.

sorry maca but that circuit is just going to make the latching relay into an oscilator. while you hold the momentry on the relay is just going to chatter and you wont know where its going to stop. I personally think you are better off doing it with 2 push on/off buttons with the seperate illumination circut in them and doing this.

relaylightything.jpg

by running the earth of the relay through the reversing lights when you goto reverse if youve left the lights on they will turn off, if your planning on using the work lights as a reversing light you can drop the whole relay out and just run the output of the switches to your lights OR keep the relay but run the coil side to earth instead of the reversing lights. the lines from the bulbs need to goto earths, I forgot to put earth symbols on.

Guys this is good reading..

Just one question though... if my work lamp is a fairly high power LED one that claims (yet to verify) a 1.2 amp draw, are relays needed???

I'm looking at wiring this in totally separate to the reversing lights.