Welcome to BigCarClub!

Not logged in!

Hey there, welcome to BigCarClub!
You don't need to be logged in to view the forum but the experience will be so much better if you are! Users can login or if you don't have an account already, you can create one for free by clicking the Register link in the top right corner of this page.

Advert:

Ignition Live Feed

Started by AndyPoole, June 25, 2023, 08:53:26 AM

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

Hi

Apart from the w wire on the alternator does anyone know of a ignition live feed under the bonnet on a 2006 Mk2 Galaxy?

Andy

I take it you mean a switched feed ie 12v?

There are quite a few but what for?
how much power do you need?
It's important to consider the load you want to add
and any effects it may have before tapping into an
existing circuit.

One option often used is to use the tap to activate a relay where the relay coil will use milliamps and switch a direct (fused) feed from the battery if you want to run a heavy load.

A typical 20A relay may have a coil resistance of say 70 ohms so would pull around 170 mA @12V from a circuit
or more likely, 200mA from a 14V running voltage.

I've used PCB relays rated a 5A for lighter loads which only pulled around 40mA from a circuit.


Not sure but could you plug in into the back of the car stereo maybe or the headlights.

Speaking of which, does anyone know if I can make it so my side lights are always on when the motor car's engine is running? Thank You.
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all. Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

Hi so none can help with a ignition switched feed that is under the Bonnet not in the passenger compartment

I assume this is for something like DRL's?

You'll need to make your own ignition source in the engine bay, everything in there is either low current or signal sensitive so putting a load (which will probably create noise) on anything like that is a big no-no.

The best way is to bring a signal wire in from the cabin and then switch a relay direct from the battery which will give you a clean, isolated supply.
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all. Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.

Or should I say:

It is presumed that the subject matter under consideration pertains to the realm of Daytime Running Lights (DRLs), am I correct in my assumption?

Should you desire to proceed with the aforementioned endeavor, it shall be imperative for you to fabricate an autonomous ignition source within the confines of the engine bay. It must be duly noted that the entirety of components housed therein are predisposed towards a state of either low current or signal sensitivity. Ergo, subjecting any such component to a burdensome load, which is liable to generate undesirable auditory disturbances, is unequivocally proscribed.

The most judicious course of action to be undertaken lies in the adoption of a modus operandi wherein a signal wire is ingeniously introduced from the cabin, followed by the direct engagement of a relay with the battery. This astute maneuver shall bestow upon you a hygienic and self-contained energy supply, safeguarding against potential contamination.

May this counsel, delivered with an air of utmost formality, serve as your beacon, illuminating the path towards an efficacious resolution.
I drive a Seat Alhambra 1.9Tdi which has 115bhp and an automatic gearbox.

I am happy to help you with all your questions. I am not a qualified mechanic but seem to be better at fixing my car than even the most experienced garages.

I have lots of friends here and very much enjoy talking with you all. Always remember, a motor car is a serious tool and should be treated with respect. Put your safety first, always.