Need a simple 12 volt latching relay.

[eTech]

If you could build a small circuit, you could use a toggle FF IC, such as a CD4013 with a transistor buffer, which would alternately turn a single relay on and off in response to the PB signal.

There's actually an automotive grade chip for that ....U6032B AMTEL

eT

 

[jsmith1717]

If the feed to the relay logic/fog lamps comes from a fuse in the fuse-block that is switched on/off with the key, then problem solved.

as I will say again the signal I'm getting is direct from the switch, its signal goes to the bcm, I could get a signal from the bcm for the fogs and use normal relay but I will have to pay Mini dealership a hour labor to reprogram the bcm to allow the fogs.

 

[MikeMl]

as I will say again the signal I'm getting is direct from the switch,...

But there is no guarantee that the switched signal out of your BCM/dash is up to supplying several Amps to run the lamps. You still need to feed power to the switching relays/lamps and use the dash switch to initiate the relays. That new circuit should be fused for ~10A.

 

[jsmith1717]

But there is no guarantee that the switched signal out of your BCM/dash is up to supplying several Amps to run the lamps. You still need to feed power to the switching relays/lamps and use the dash switch to initiate the relays. That new circuit should be fused for ~10A.

well the lights tgemself already have a standard Bosch relay on them

 

[MikeMl]

well the lights tgemself already have a standard Bosch relay on them

Right, you will replace the single existing Bosch relay with three relays which make up the flip-flop. The existing switch in the dash will feed power only to the coil of the "third" relay; not to the fog lights. The power feed to the fog lights will come from whatever feeds the existing Bosch relay....

 

[crutschow]

The U6032B IC suggested by eTech will provide the toggle action you need, with built-in switch debouncer and a driver that can directly control your existing Bosh relay.

 

[jsmith1717]

The U6032B IC suggested by eTech will provide the toggle action you need, with built-in switch debouncer and a driver that can directly control your existing Bosh relay.

But how would I wire that up?

 

[crutschow]

But how would I wire that up?

Look at paragraph 2.7 on page 6 of the U6032B data sheet.

 

[jsmith1717]

Look at paragraph 2.7 on page 6 of the U6032B data sheet.

Ok this looks like it might be the best choice, seems cheap to build and not too hard.