[urq] The headlight mod.

spot.ontheroad spot.ontheroad at virgin.net
Tue Nov 1 17:36:09 EST 2005

The nights are closing in and I am scared to drive too fast in case I blow the candles out so I have finally got around to finishing the headlight mod whereby you run power to remote relays and use the old headlight feed just to trigger the relays. The idea being that you overcome the inherent voltage drop of the original wiring.
What I have done is run two feed wires from the alternator to a new fuse board. From this the power goes to new relays, the power to energise the relays coming from the old feed to the nearside headlight. The wiring going out to the headlights (main and dip) is a stripped down version of the headlight loom from a donor car - this meant that none of the original wiring has had to be cut. If it doesn't work out I can put it back to standard and drive slowly again.
I'm not sure about the results so far. 
The lights are noticeably brighter but the light switch does something I don't understand. It is the end of the day, it just started raining on me as I was clearing up and my brain is dead.

Before I did this the light switch worked as follows:
Ignition off. Turn switch and side lights came on, Turn it further and dip beam came on, pull dip stalk and main beam would come on.
Ignition off. Turn switch and side lights come on. Turn it further and no dip beam and no main beam other than the ability to flash the lights.
Ignition on. Turn switch and side lights come on. Turn it again and dip beam comes on, pull dip stalk and main beam comes on.
Question: why is it that dip and main no longer come on without the ignition? Is it because their power now comes from the alternator rather than the battery via the main fuse box?
I'm too tired to work it out. 
Apart form that the lights seem to work fine.
Any pointers gratefully received.
Many thanks


'87 WR

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