What's this called, mine is cracked and terminals messy. Where's the best place to get them.

Thanks...

 

"Horn relay and junction block"

Used on Olds, Pontiac and Buick 58-68. It's been obsolete for years. You'll have to get an NOS, period aftermarket, or good used one. I've found them on ebay, or sometimes you'll find someone on one of the forums selling one. Last one I got, a fellow on AACA forums had some.

Word to the wise. NOS GM ones are expensive, because GTOs also use them and we all know what that has done to prices on shared parts. You may be able to find a good aftermarket one. Standard-Blue Streak, Filko, NAPA Echlin, Sorenson, any of those brands in their old packaging will be good.

You may find some that have an extra threaded post that is hot at all times. Those are for Buicks and some big Pontiacs. It will work fine on an Oldsmobile, just put some type of insulator on it so it won't ground to anything and make a smoke show.