Thread: Defender Headlight problems

Originally Posted by muddy

hi gruntfuttock

check the relays and find out which one is high and low by operating the dip switch and listen/feel which one clicks on high beam and see if the other one clicks on low. if low doesn't click then determine what terminals are the coil (on base of relay ) ,with your test lamp connect to each one of these terminals on rely base (where the relay plugs in ) to see if test lights up on low . if not check either terminals with test lamp and other wire to a good earth ,if it does light up on one of the terminals you have a bad earth on relay base and similar to check if the positive by a known positive and the other side terminal on base .If light fails to light up there is no power at coil base.

if the low relay is clicking/picking up determine which is the supply and the switched supply. check other terminals not coil and with test lamp on a good earth find which one has power ,the other one is the one that goes to the light (you could put short from a known + to it and see if lights up low beam)

hope this helps i

Thanks very much I’ll have a go tomorrow.

Thanks to everyone for their input into my problem, the fault was found, it was a faulty connection to the low bean relay (pink and two pin), which by the is located behind the dashboard, near the wiper relay. Grrrr.

Thank you to all.