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Date: Wed, 19 Mar 2003 18:48:50 +0000
From: Grunff <grunffnopsam.com>
Subject: Re: No high beams on 1987 9000


Alan Dzija wrote: > My conclusion is that it's the switch, on the steering column which > controls the high beams, turn signal, hazard lights, and cruise > control. Turn signal and hazard functions are OK, cruise doesn't work > (hasn't worked in a while either, but there are too many components to > conclude that it's the switch). > > From my reading of the factory wiring diagram, there are no other > components in the high beam circuit path. I understand some later cars > may have a "big relay" which controls this which often goes bad. The > biggest "relay" in my panel is a "filament monitor" which checks (I > thinks) that all the bulbs are working. In checking part numbers, 1986, > 1987, and 1988 each used a different part # for the switch. > > The switch is $250 min from a dealer -- anything I've overlooked before > plunking down the cash? Suggestions/help/sympathy greatly appreciated > -- thanks in advance. Alan The switch is a very common failure. But if it is the switch, the the dash high-beam indicator wouldn't come on either. Assuming it's the switch, they're very easy to replace. All you have to do is unscrew the bottom shell of the column housing (after pulling the column all the way forward), and remove the top + bottom halves. You can then unbolt the switch and remove it. If you can get a good second hand unit, that's your easiest option. If not, read on. The switch comes apart quite easily (examine it, you'll see how). The most common failure mode is for the square cam which closes the contacts to melt. Alternatively, the contacts can get badly pitted and no longer make contact. Take a look. Check the cam (white plastic part). Check + clean the contacts with fine emery paper. When my 1987 switch failed, I replaced it with a good used one. When that one failed a year later, I replaced it with a toggle switch which I mounted on the dash and wired straight to the switch plug. -- Grunff

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