Re: Hydraulic stop light switch

Posted by HH56 On 2016/3/25 18:59:43

If stock, 22nd series brake lights won't go thru the turnsignal switch and turnsignals should have separate bulbs. I don't remember if you are one who did a modern harness so if that is the case no suggestions other than check voltage as Kev suggested.

Voltage check at the brake switch is also a good idea for a stock harness but there are a couple of other things you can check too. There are connectors under the L side of dash which connects the front part of loom to the wires in the section going overhead to rear. Make sure that a connector hasn't come apart. There is another connector -- 4 position type -- near the left taillight where the wire from the overhead loom feeds both bulb brake filaments. Make sure that is OK and of the proper type. There are different type connectors that look the same. The one used for brakes and the one for tail light filaments has all 4 positions shorted together.

If all is good then look at the bulbs -- remove one and hold it next to socket the way it would be inserted. Make sure the bulb terminals line up with the socket terminals. A few years ago some bulbs were available that would fit the socket just fine but when inserted and locked in position the terminals on bulb and terminals in socket were just offset enough that connection problems resulted. Also in the socket, make sure the phenolic support for the terminals hasn't been deformed and one terminal is lower than the other and not making contact.