Post by Allen Gasper on Feb 16, 2011 12:38:52 GMT -8
I am getting ready to put my turn signal bulb in and put it back in the car and notice that when I look down into it I see to tabs that come in contact to the bulb, but I notice that the wiring and bulb is a single contact BA15 bulb. There is no double filament. Is that correct? I mean it almost looks like one contact would be for one fillament (signal) while the other would be for the park - but the schematics and provious bulb points otherwise.
I just want to confirm that nothing is wrong. 64' Type 34.
Post by Greg Skinner on Feb 16, 2011 21:50:47 GMT -8
There are at least two different kinds of turn signal housings for the Type 34.
In Europe, parking lights on the Type 34 could actually be part of the headlight. Power was provided to a very small secondary bulb in the headlamp socket. When the parking lights were turned on, the headlights would illuminate quite dimly. These are referred to sometimes as 'city lights'. In this lighting configuration, the only purpose of the lower front light assemblies is for turn signals. On the back side of these housings you will find a male spade terminal labeled '31', which is the connector for the Ground wire; a second male spade connector on the backside of the housing is for the turn signal power wire itself. If you do a continuity test between '31' and the turn signal housing, it should be a dead short. On these housings, there will be only one bulb contact within the bulb socket for the '1156' style single filament bulb.
In North America--and in other places, no doubt--the city light function was moved from the headlight assembly to the turn signal housings. These housings have a bulb socket with two contacts for use with the '1176' style dual filament bulb. One filament in the bulb is used for parking lights and the other is used for the turn signal. The Ground path is through the housing itself, through one or both housing mounting screws, resting against a bare patch of metal on the inner wheel-well side of the fender.
I have never seen an official schematic that details the North American wiring for the Type 34, however, the original wiring I have pulled from cars has been gray for the parking lights. Only the turn signal wiring is present on the actual wiring diagrams.
My car came to me with one European and one North American front turn signal housing, each with the correct bulb, but both were wired to support only the turn signals.
Post by Allen Gasper on Feb 17, 2011 14:15:57 GMT -8
Okay, that explains it. I believe since I have two contacts, I have the "North American" version no doubt. I will do a continuity test to make certain, but why else would there be two connections at the bottom of the bulb.
Last question: how UN-fashionable is it to have the turn signals wired for signals only on a T34? What is your advice?
Post by Lee Hedges on Feb 17, 2011 15:55:08 GMT -8
Turn signal bulb wiring is the least important aspect of your T34. As long as they're working and you're happy, then they're A-OK with the T34 community.
The side marker lights (on the front fender above the A-pillar) were available in two versions as well: economy parking lights (activated with the turn signal lever in the left/right position with the key OFF) for parking on thin city streets/curbs overnight, and side turn signal lights (working in-tandem with the front/rear signals). For safety sake, I much prefer connecting the side marker lights up as turn signal lights.