Greg, I've seen this happen before especially associated with light bulbs. Even though you get continuity with the brake light switch via the ohm meter, the electrical contact area (physical contact area) within switch is not large enough to carry the 12v necessary to light the bulb. If you can, spray some electrical contact cleaner inside the switch. If you can't clean the internal contacts, a new brake switch is needed.
Bruce > > > Date: Sat, 16 Aug 2014 14:30:15 +0000 (UTC) > From: [email protected] > Subject: [alfa] brake light switch > > Gentle Alfisti, > Here's something odd: the brake light switch is part of a hydraulic union > mounted to the firewall on this 66GT. It passes a continuity test when I > step on the pedal. I can make the ohm meter go from one to small fractions. > It will not, however, carry twelve volts to illuminate the rear lights. > I've bypassed the switch and the lights light-up just fine. I've tested the > switch several times and it reveals the same symptoms. It breaks > resistance, but will not carry voltage. Has anyone ever encountered such a > perplexity? > modelle > 105.04 > 115.01 -- to be removed from alfa, see http://www.digest.net/bin/digest-subs.cgi or email "unsubscribe alfa" to [email protected]
