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Does the headlight relay ever fail? 200

posted by  someone claiming to be Bond. James Bond. on  Fri Sep 24 18:45 CST 2004 [RELATED]

I've never had one go out, and no one on the board has mentioned it. Buuut...We're dealing with cars 12 to 30 years old and they'll never get any newer.

There are items like the headlight relay that don't have a replacement schedule but could make a real problem if they quit at an unfavorable moment. After X miles or X years, should I start thinking about replacing them in advance of failure?

Possible list:

Crank sensor (I did this already on my 1992--the insulation was cracking)
Main fuel pump (not noisy at 213k; but on my 1980 the pump quit at 232k with NO
warning)
ECU (I found one of the late production 561s)
ICU (No one has ever mentioned this--are they bulletproof?)
Fuel pump relay (I've got a new spare in the car; maybe I should swap it now?)
Other?

Electrical/electronic engine systems are great except that they tend to a 100% failure mode.

Thanks for any help you can give.

Doug Harvey






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