Hey guys! So I noticed that my signal started to flash fast, no biggy, just need a new bulb. Well I get the brake light out and pull all 3 bulbs to get P/N's and buy new ones. I get out and have 3 packs of bulbs. Replace them and all is good. Until the FINAL turn into my driveway. It starts going fast again. Its the same "middle" bulb in the brake light.
One thing I did notice but didn't really pay much attention to is that the P/N's were as follows

But because I only pulled the one side I bought 2 packs of 3057 and 1 3157 and replaced the middle 3057 with the 3157 on the right side and have no problem yet with it.

Everything internally seemed to be good. No moisture at ALL in the light itself and the connections all seemed to be clean (close to dusk in the Canadian Tire parking lot)

Its also very intermittent when is flashed fast. On the way to the store it was fine. No quick flashing and I could see that all light were working in the reflection of the car behind me.

What do I check next.

Another side note: My voltage goes down when my signals flash. Both sides, all the time.

 

Is it possible that the one 3157 bulb should be replaced with a 3057 bulb? Maybe the 3157 initially worked, but that the filament burned out on your final turn I would replace with a 3057 bulb and see what that does.

 

Yea but I reaplaced every bulb in the back. Even the other side has a 3157. So It should do the same.

 

Well just to be sure I picked up a set of 3057's and now everything is good. I didn't think it would make that much difference considering the other side never acted like that.

 

I'm no expert but i'm thinking some kind of short in your wiring harness. If its drawing enough power to see a voltage drop its a signifacant draw. That could also explain why the bulbs intermitently. Just my 2 cents.

 

Yea, I figured as much lol. Just havent gotten around to following the harness yet!