Hi all, anyone here could advise me as I'd like to fit some additional spotlights to my fabia, something mounted in the grille perhaps however as these cars use the single H7 qith the shutter for the high beam I suspect it isn't quite as simple as just piggybacking the high beam? If anyone has done this kind of thing could tell me if its feasible or if there's an alternative way to do it? I'd like them to be bound to the high beam as its then just easy on and off operation down dark roads. Thanks!

you should never piggy back of any lighting circuit when fitting additional lamps.

You should install a new circuit which should be fed from the battery then via a relay and "controlled" by the high beam circuit.

So yes you can use the "signal" from the high beam circuit to control the relay for any additional lamps, the same "feed" that tells the shutters to open if you have projector headlamps.

13 hours ago, UrbanPanzer said:

you should never piggy back of any lighting circuit when fitting additional lamps.

You should install a new circuit which should be fed from the battery then via a relay and "controlled" by the high beam circuit.

So yes you can use the "signal" from the high beam circuit to control the relay for any additional lamps, the same "feed" that tells the shutters to open if you have projector headlamps.

Do you know of any guides for this kind of work? I would be fine if the high beam were a separate circuit, such as a single H4 or twin H7 but due to the way these lights are on these cars I'm a little unsure of how to do it. I'm only really after the auxiliary lights because the roads round me get VERY dark and even with decent bulbs or even LEDs in the headlamp unit they just sometimes don't cut through the dark enough. Thanks!

1 hour ago, Type17520V said:

the roads round me get VERY dark and even with decent bulbs or even LEDs in the headlamp unit they just sometimes don't cut through the dark enough.

Or you could drive slower?

On 27/05/2025 at 13:04, Paws4Thot said:

Or you could drive slower?

What an incredibly helpful thing to say (!) I'm not rocketing down these roads anyway but its nice to have extra visibility. Not sure why you felt the need to come in and say that?

On 27/05/2025 at 11:58, Type17520V said:

Do you know of any guides for this kind of work? I would be fine if the high beam were a separate circuit, such as a single H4 or twin H7 but due to the way these lights are on these cars I'm a little unsure of how to do it. I'm only really after the auxiliary lights because the roads round me get VERY dark and even with decent bulbs or even LEDs in the headlamp unit they just sometimes don't cut through the dark enough. Thanks!

Here is a basic diagram, this will work for any additional lamps. Wiring used between relay and lamps, and battery to relay (86,87,30) needs to be able to cope with the potential current draw the lamps have, a pair of 55watt spots would need 15 amp cable. If they are LEDS then that would be lower. Personally I would use 15amp cable as over engineering never hurts and future proofs the circuit if any additional loads are added, especially if LEDS.

Wiring spliced of the main beam supply (85) only needs to be minimal size like 3 amp as it only “signals” the relay coil to operate. If you want a choice of the additional lamps to operate when main beam is on, then simply add a switch to the terminal 85 feed.

15 minutes ago, UrbanPanzer said:

Here is a basic diagram, this will work for any additional lamps. Wiring used between relay and lamps, and battery to relay (86,87,30) needs to be able to cope with the potential current draw the lamps have, a pair of 55watt spots would need 15 amp cable. If they are LEDS then that would be lower. Personally I would use 15amp cable as over engineering never hurts and future proofs the circuit if any additional loads are added, especially if LEDS.

Wiring spliced of the main beam supply (85) only needs to be minimal size like 3 amp as it only “signals” the relay coil to operate. If you want a choice of the additional lamps to operate when main beam is on, then simply add a switch to the terminal 85 feed.

You are legend mate!! Ill look into this, probably get one of my mates who understands this stuff to help! Thanks a million!

@Type17520V

Improving the Full Beam for these 60 mph NSL roads that are dark for everyone else is Simply Clever.

1 hour ago, Ootohere said:

@Type17520V

Improving the Full Beam for these 60 mph NSL roads that are dark for everyone else is Simply Clever.

I don't find myself typically moving at 60mph down those roads at night regardless, or even during the day if it isn't suitable. the extra visibility that would be granted would certainly be welcome especially once the nights start drawing back in later in the year just to help cut through the darkness a bit more, seems to be a bit of a controversial subject here, eh?