Signal light question

[jimbir]

I own a 2006 mustang. LH inboard signal light was out. I replaced the bulb, still not working. Plugged the new into the outboard socket and it worked. Put the bulb from the outboard socket (was Working) into the inboard socket and it didn't work. I can plug either bulb into either socket and they will work but I can't get both bulbs to work at the same time.

What's up with that?

Thanks for any help, Jim

 

[jpplaw]

The computer can make it do that. Unhook your battery, that will reset it.

 

[jimbir]

Problem solved. Even though they have the same physical and electric specifications and even though they work one by one, You can't use bulbs with different numbers. I bought two new 4057's and the signal works. (This is probably something everybody knew except me.)

 

[GoneFord]

But now there's a thread that might help someone else...

 

[jimbir]

Same problem but with the RH side this time. Again, two different bulbs. A 4075 and a 4157. The 4157 wasn't working. I replaced it with a 4057 and that fixed the problem. BTW, there was nothing wrong with the 4157.

Thanks for the help, Jim B.