Getting Spots to work with HID's??
Thread Starter
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Joined: Feb 2002
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From: Behind the 400BHP door :)
I have got a query for you electrical wizards! 
When i fitted a Bi-Xenon HID kit to my P1, the spots/driving lamps whatever you want to call them ceased to work.
Now, I know the reason for this, but I don't know how to go about rectifying it!!
Basically: The spots come on when full beam is selected as standard.
They DO however have a dash mounted switch so they can be disabled (for when you want to run the covers on)
When I fitted the HID kit which plugs into the Original H4 Wiring harness they don't work at all. This is because the HID uses 1x bulb, and just moves the bulb in and out on a solenoid to create the Dipped/Main beams. (So Main Beam wiring in car never gets used with the HID's. thus the spots won't activate!!)
How can I get the spots to work on full beam with the HID kit fitted????
Is there a simple re-wiring mod that can be done?? Have removed the HID's for time being, and gone back to OE set-up.
Thanks for any help

When i fitted a Bi-Xenon HID kit to my P1, the spots/driving lamps whatever you want to call them ceased to work.
Now, I know the reason for this, but I don't know how to go about rectifying it!!

Basically: The spots come on when full beam is selected as standard.
They DO however have a dash mounted switch so they can be disabled (for when you want to run the covers on)
When I fitted the HID kit which plugs into the Original H4 Wiring harness they don't work at all. This is because the HID uses 1x bulb, and just moves the bulb in and out on a solenoid to create the Dipped/Main beams. (So Main Beam wiring in car never gets used with the HID's. thus the spots won't activate!!)
How can I get the spots to work on full beam with the HID kit fitted????
Is there a simple re-wiring mod that can be done?? Have removed the HID's for time being, and gone back to OE set-up.

Thanks for any help
Simple.
Find the "trigger" wire for the HID main beam, (I assume they have a relay?) Attach to this the trigger wire from the spots relay. Both should run to the respective relay terminal 85's.
Alcazar
Find the "trigger" wire for the HID main beam, (I assume they have a relay?) Attach to this the trigger wire from the spots relay. Both should run to the respective relay terminal 85's.
Alcazar
Thread Starter
Scooby Regular
Joined: Feb 2002
Posts: 1,403
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From: Behind the 400BHP door :)
Originally Posted by alcazar
Simple.
Find the "trigger" wire for the HID main beam, (I assume they have a relay?) Attach to this the trigger wire from the spots relay. Both should run to the respective relay terminal 85's.
Alcazar
Find the "trigger" wire for the HID main beam, (I assume they have a relay?) Attach to this the trigger wire from the spots relay. Both should run to the respective relay terminal 85's.
Alcazar
I can see No seperate Relays in the wiring as such for the HID's

They fit to the OE 3pin Harness that usually clips onto the original bulbs. (this is the feed to the ballasts) Then there is the wiring from the ballast to the bulb.
Also, sorry for being abit 'thick' but I dont understand your "both should run to the respective relay terminal 85's" statement????
What is Terminal 85?
Basically, I need to run a wire from where to where??

(Simpletons guide please
)
Thread Starter
Scooby Regular
Joined: Feb 2002
Posts: 1,403
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From: Behind the 400BHP door :)
I have these that may help, but I don't know what mods I need to do etc....

Foglight Relay with arrow.

PIC of HID Kit. (think it maybe the small blk and white wire from the bulb and on H4 connector that maybe the Main Beam trigger wire?? )

Foglight Relay with arrow.

PIC of HID Kit. (think it maybe the small blk and white wire from the bulb and on H4 connector that maybe the Main Beam trigger wire?? )
Last edited by PICKLE; Nov 22, 2006 at 09:50 PM.
OK, so you don't have a relay for the HID's.
There must still be a wire carrying the signal to the new HID lamp to tell it to go into "mainbeam" mode, so to speak. This will be the mainbeam wire on the OE wiring loom, which originally plugged ito the headlight, and now plugs into the new loom supplied with your kit.
You need to find this trigger wire. A simple circuit tester, such as the ones sold in carshops for about £2, (which consist of a brass barrel with a pointed end and a wire with a croc clip on the other end), will help here.
Wire up HIDs so that they work. Connect the croc clip of your tester to battery-VE, touch the point to battery +VE to ensure it's working. When you are satisfied, use the sharp probe to find which wire from the original wiring loom, (the one that DID plug into the rear of the lights), causes the tester to light up when main beam is selected, BUT GO OUT WHEN DIP IS SELECTED. This last is important.
Use a Scotchlok, or similar to link this wire to your spotlight relay. Look on the bottom of the relay, it has, (SHOULD HAVE), four terminals lablled 85, 86, 87 and 30.
Take the feed from the Scotchlok to terminal 85.
Ensure that terminal; 86 is connected to a good earth, battery -VE is best.
Check again that the relay clicks when you select main beam, and clicks off when you select dip.
Now connect the spotlight relay terminal 30 to battery+VE via a fuse if the relay hasn't got one.
Finally connect relay terminal 87 to the spotlights, and don't forget to run a decent earth from both spots to battery-VE.
Alcazar
There must still be a wire carrying the signal to the new HID lamp to tell it to go into "mainbeam" mode, so to speak. This will be the mainbeam wire on the OE wiring loom, which originally plugged ito the headlight, and now plugs into the new loom supplied with your kit.
You need to find this trigger wire. A simple circuit tester, such as the ones sold in carshops for about £2, (which consist of a brass barrel with a pointed end and a wire with a croc clip on the other end), will help here.
Wire up HIDs so that they work. Connect the croc clip of your tester to battery-VE, touch the point to battery +VE to ensure it's working. When you are satisfied, use the sharp probe to find which wire from the original wiring loom, (the one that DID plug into the rear of the lights), causes the tester to light up when main beam is selected, BUT GO OUT WHEN DIP IS SELECTED. This last is important.
Use a Scotchlok, or similar to link this wire to your spotlight relay. Look on the bottom of the relay, it has, (SHOULD HAVE), four terminals lablled 85, 86, 87 and 30.
Take the feed from the Scotchlok to terminal 85.
Ensure that terminal; 86 is connected to a good earth, battery -VE is best.
Check again that the relay clicks when you select main beam, and clicks off when you select dip.
Now connect the spotlight relay terminal 30 to battery+VE via a fuse if the relay hasn't got one.
Finally connect relay terminal 87 to the spotlights, and don't forget to run a decent earth from both spots to battery-VE.
Alcazar
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