1977 Oldsmobile Cutlass Supreme 350 5.7. These are wired inline coming from my relays. Does anyone know what they are?

 

It's an inline fuse holder for glass fuses.

 

I was going to say miniature flux capacitor.

 

X2. Pull it apart and you find a small fuse. I normally find them in the radio circuit.

 

Thanks Fellas!. I almost swapped them out for fusible links. Sheesh 🔥🔥🔥🔥

 

The most common use is the inline fuse for the power feed to the high speed blower relay for A/C cars

 

Precisely, and that looks exactly like that stealthy dude hiding out on the firewall.

 

Yes. Thats where my problem was. Had a corroded heater blower resistor but when I swapped those old in-line fuse holders for new ones & fuses viola. Heater blows high now.

 

@SirTuko1 first off, apologies for resurrecting this thread…

Did you end up getting this fuse holder apart? I need to change this fuse, and I’ve yanked on it enough that I’m concerned I’m going to destroy it. Does it need to twist before pulling it apart, or just simply pull?

JB

 

In over 50 years fooling with these things I have never been able to get one apart without destroying it. Some people might know the trick. I don't.

Unless you're going for a 100 point restoration, cut the offensive thing out and splice in an inline fuse holder. Either glass tube or blade type will work. Use good quality butt connectors and heat shrink tubing.