Sun visor illuminated mirror voltage?

Nomis · 29th November 2006, 13:33

I am still in the process of fitting a pda to the sun visor (when I can find one).

What is the voltage of the light in it as thinking of making it easier install if I use the feed which currently feeds the light for the pda.

The pda car adapter is 12v dc 5.5v +/- 5% max 1000ma. I am thinking of fitting the little circuit board from the adapter inside the sun visor and connecting the input to the light connector hopefully. Saves messing with trim etc and the pda gets the correct input.

Simon.

raykay · 29th November 2006, 14:16

It's 12 volts - but it the feed for the lamps is controlled from the BCU and is switched on when necessary, it is not a constant 12 volt supply.

Nomis · 29th November 2006, 14:19

Quote:

Originally Posted by raykay

It's 12 volts - but it the feed for the lamps is controlled from the BCU and is switched on when necessary, it is not a constant 12 volt supply.

So it only has a feed when needed, ie when dark? Never tried it and noticed a light during the day.

Keith · 29th November 2006, 15:58

No what Ray means is it may not be a fixed voltage if it works in the same way as the courtesy lights then the BCU pulses it on off on off very fast to extend bulb life

Anything driven by the BCU is definitely not something to use as a source for other equipment

Nomis · 29th November 2006, 16:07

Quote:

Originally Posted by Keith

No what Ray means is it may not be a fixed voltage if it works in the same way as the courtesy lights then the BCU pulses it on off on off very fast to extend bulb life

Anything driven by the BCU is definitely not something to use as a source for other equipment

Ah I get it.

I will run a complete new cable then to another point. The electrical side of a car is not my strongest so I may just run it to the current cig lighter.

raykay · 29th November 2006, 16:12

The information I had was from the Electrical Manual, but checking the circuit diagram, there is a 12v direct feed from the BCU to the the vanity mirrors on a Purple/Slate cable, but as it is from the BCU I don't know if it is suitable for what you want, I think I read somewhere that the interior and tail lights are fed from a PWM supply to keep the voltage constant.

Nomis · 29th November 2006, 19:45

So do you think it is a no no wiring it up to that supply and best to find an alternative?

Simon.

Christopher · 29th November 2006, 19:54

Quote:

Originally Posted by waj

So do you think it is a no no wiring it up to that supply and best to find an alternative?

Simon.

Not a good idea as you will be putting a drain on the BCU, and could blow something ... best not to chance it!

Nomis · 29th November 2006, 20:41

Quote:

Originally Posted by Christopher

Not a good idea as you will be putting a drain on the BCU, and could blow something ... best not to chance it!

Oh well, a shame as would have made it easier. I will bish bash bosh a connection somewhere else then! Lol.

29th November 2006, 13:33	#1
Nomis Loves to post micra Join Date: Nov 2006 Location: Leeds Posts: 473 Thanks: 1 Thanked 0 Times in 0 Posts	Sun visor illuminated mirror voltage? I am still in the process of fitting a pda to the sun visor (when I can find one). What is the voltage of the light in it as thinking of making it easier install if I use the feed which currently feeds the light for the pda. The pda car adapter is 12v dc 5.5v +/- 5% max 1000ma. I am thinking of fitting the little circuit board from the adapter inside the sun visor and connecting the input to the light connector hopefully. Saves messing with trim etc and the pda gets the correct input. Simon.

29th November 2006, 16:12	#6
raykay I really should get out more....... Now Other Manufacturer Join Date: Nov 2006 Location: Co. Kerry Posts: 2,786 Thanks: 16 Thanked 310 Times in 283 Posts	The information I had was from the Electrical Manual, but checking the circuit diagram, there is a 12v direct feed from the BCU to the the vanity mirrors on a Purple/Slate cable, but as it is from the BCU I don't know if it is suitable for what you want, I think I read somewhere that the interior and tail lights are fed from a PWM supply to keep the voltage constant. Last edited by raykay; 29th November 2006 at 16:23..

29th November 2006, 14:16	#2
raykay I really should get out more....... Now Other Manufacturer Join Date: Nov 2006 Location: Co. Kerry Posts: 2,786 Thanks: 16 Thanked 310 Times in 283 Posts	It's 12 volts - but it the feed for the lamps is controlled from the BCU and is switched on when necessary, it is not a constant 12 volt supply.

29th November 2006, 15:58	#4
Keith This is my second home ZT400 Join Date: Oct 2006 Location: Ellesmere Posts: 5,948 Thanks: 0 Thanked 43 Times in 29 Posts	No what Ray means is it may not be a fixed voltage if it works in the same way as the courtesy lights then the BCU pulses it on off on off very fast to extend bulb life Anything driven by the BCU is definitely not something to use as a source for other equipment

29th November 2006, 19:45	#7
Nomis Loves to post micra Join Date: Nov 2006 Location: Leeds Posts: 473 Thanks: 1 Thanked 0 Times in 0 Posts	So do you think it is a no no wiring it up to that supply and best to find an alternative? Simon.