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When I put the driving lights on the both turn signals glow. I have short someplace. I replaced a couple bulbs, but not sure I'm going the right direction. Just not sure when this started.
If you talking about the turn signal green indicator lights in the speedo & tach housings on my 77 first place I check is the front side marker lamps.
The 168 bulbs are push in style and the wire contacts of the bulb can be finicky.