Registry of Ex Military Land Rovers

REMLR Technical => Electrical => Topic started by: AlexR on November 10, 2013, 01:03:32 PM

Title: Low voltage in hi beam circuit
Post by: AlexR on November 10, 2013, 01:03:32 PM

Recently fitted some driving lights to the perentie and discovered there is a low voltage in the high beam circuit when just low beam is on. This means that when I flick high beam off the driving lights stay on.

Is this low voltage normal?? Why is it there?

Title: Re: Low voltage in hi beam circuit
Post by: THE BOOGER on November 10, 2013, 03:05:13 PM

I don't think its normal looks like you have a leak somewhere :( maybe just enough to keep the relay closed

Title: Re: Low voltage in hi beam circuit
Post by: Taslandy on November 10, 2013, 04:55:33 PM

have you used the correct relay?,as there are 2 different types of relay, they look the same but switch different!

Title: Re: Low voltage in hi beam circuit
Post by: AlexR on November 10, 2013, 06:02:14 PM

I wasnt aware there is two types of relays. What is each type called?

Title: Re: Low voltage in hi beam circuit
Post by: Taslandy on November 10, 2013, 06:34:14 PM

you will need the open contact type, not a change over type, i have put a link to the narva website for you to look at
http://www.narva.com.au/products/browse/normal-open-4-5 (http://www.narva.com.au/products/browse/normal-open-4-5)
if you while on that site look at the change over type you can see the difference
also the spade terminals on the relay?
30 power from battery or power source
85 earth
87 & 87a to lamps
86 from switch,via main beam circuit, which should be a seperate switch with a light in it so you can turn the spot/fog lights off
thats how i wire them up, a more modern vehicle may be different!

Title: Re: Low voltage in hi beam circuit
Post by: Uncle Ho on November 14, 2013, 02:03:05 PM

 If my memory is correct the dip switch on the Perentie is the same Lucas type as fitted to all Landrover products post the Series 3, :(   which draws all the current from through the switch, so by the time it reaches the lights it may only be 10.5 volts,this can be rectified by fitting a "New-Era" NLR-132 /ACX2034 twin fused (30amp) relay ($35 aprox REPCO), this will give you headlights 12V on both beams, you run a 6mm cable from your battery to the "B" terminal of the relay, and the switching is stamped on the relay I.E. S1( low in) to L1(low out) and S2 ( high in) to L2 (high out)  ;)

Brought my 85 Range Rover from 10.7v to 12.1v and a VAST improvement.  I then fitted a NARVA 68024 5 pin 30 amp small relay to run 2x 55 Hella Spots through a LED illuminated toggle switch NARVA 60285BL (red/blue/green)  that set-up has worked now for 5 years

I hope that is of help to you  :D