Trying to use relays with a electronic momentary to latching converter. Relays are tripping the latching converter?

I am trying to use this devise,   to turn on a relay attached to a positive wire from a blinker can that sends the signal to the corresponding light. I have two in parallel so I can turn on and off a LH and a RH light with a momentary switch. (can't use a regular on off switch). It works perfectly when attached to its own power supply.

I am using this in on a 12 volt system that has some other relays running various things in the system. when I hook this into the system, even directly from the battery, activating the other relays turns the relays on attached to this devise.

I suspect it to be noise since it works great on its own power supply.

I Tried running the power lead through a resistor and capacitor to help isolate the loop but didn't work. This is stretching my understanding of electricity.

What I think I am looking for is how to wire this to isolate it's power +/- circuit from the rest of the system.

Otherwise suggestions on how to trouble shoot.

I know it is best to add a diagram but I don't know how to make one.





Picture of Trying to use relays with a electronic momentary to latching converter. Relays are tripping the latching converter?
iceng1 month ago

Here is the circuit..

5relay.GIF
msumrell (author) 1 month ago

I am not good at wire diagrams but I have attached an attempt to see if I understand your thoughts on decoupling. could you show me what you mean about diode across relay coil.

mr electro1 month ago

Also put a diode across the relay coil to short the switching transients to ground. The polarity should be opposite the current flow.

mr electro1 month ago

Decouple all power rails with a 1000 uF electrolytic capacitor in parallel with .1 uF and 100 pF ceramic capacitors. This should pass most noise to ground.