Having discovered that there doesn't seem to be a complete DIY solution to removing dim-dip elsewhere and having just sorted this myself, thought I'd post what I've discovered / done. I'll try to clear up concerns about legality and melting stuff on the way too.
According to wikipedia, dim-dip has not been legal requirement since 1988. However, it was still fitted to many Landy's for more than a decade after. Wikipedia background and the fact MOT chap told me to disable it last week, suggests it really should be removed these days.
The control unit is behind the dash clocks to the lower right. Over time there's been black and pink relay versions. Other posts say that the black version of dim-dip just needs the relay pulling and job done.
The pink version is wired differently and needs to be replaced by a jumper wire between pins 2 and 8. On a standard relay the physical positions correspond to pins 30 and 87. That is, the two opposite pins which are at 90 degrees to one another.
A loop's needed because the pink dim-dip relay bridges two blue / red wires to supply a feed into the main lighting switch, via it's 'normally closed' contact. This means that linking these pins with a loop of wire is electrically equivalent to having the dim-dip relay in place, as far as the lighting feed is concerned. The key point is that replacing the looped-through relay feed with a wire loop (same size wire IS important) between pins 30 and 87 creates no danger of melting anything, as someone had suggested earlier in the thread.
So, solutions...
- Buy the offical LR bypass = £ Loads I am sure
- Buy a by-pass relay off ebay = £15.
Or,
- Make your own bypass by taking the guts out of an old relay and solder a loop of fat wire between 30 and 87. For me, this worked very nicely and took no more than 10 minutes.
- Make a 2 inch loop from two male 1/4" crimp terminals and patch 30 to 87 in the dim-dip relay base (the two blue/red wires). So long as they are pushed in there tight, it's probably as safe as a loop inside a relay case.
Hope this info saves someone confusion, time, money etc.
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