OK...

The LA socket checks out OK, so the bulb is good.

While in there checked out the GP's. Looks like # 1 is open. GP-2 to 6 all measured a slight resistance. (digital meter)

So.... Looks like it's a plug.

I thought they went in pairs when they go to effect the glow light ! I guesss not. Must be a myth.

And, I guess with a six cyclinder, 5 out of 6 working shows no discernable starting or warmup problems. Ah.......here in Florida.

Brian...you da man.

__________________
1986 SDL
My Other Car is a Porsche. When it stops leaking, I'm out of oil.