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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: Seb on February 01, 2021, 09:14:15 pm

Title: Which Fusible Link?
Post by: Seb on February 01, 2021, 09:14:15 pm
Howdy everyone! I have a quick question regarding a fusible link in my 1975 C20 Scottsdale. From the 12v distribution block in the engine compartment,there is a fusible link that goes to the orange wire that feeds the Heater Blower Motor High Speed Relay. The plastic casing of the fusible link is broken and I need to replace it. However I need to know the amperage of fuse to use. 20amp? 30? Smaller, bigger? Could someone please help me!
Title: Re: Which Fusible Link?
Post by: VileZambonie on February 02, 2021, 06:31:14 pm
Are you talking about the 30A inline fuse?

Look here http://forum.73-87chevytrucks.com/smforum/index.php?topic=27127.msg227300#msg227300
Title: Re: Which Fusible Link?
Post by: Rapid Roy on February 02, 2021, 09:54:18 pm
Howdy everyone! I have a quick question regarding a fusible link in my 1975 C20 Scottsdale. From the 12v distribution block in the engine compartment,there is a fusible link that goes to the orange wire that feeds the Heater Blower Motor High Speed Relay. The plastic casing of the fusible link is broken and I need to replace it. However I need to know the amperage of fuse to use. 20amp? 30? Smaller, bigger? Could someone please help me!

Is this what you are calling a fusible link? My high speed fan stopped working. The fuse and holder was burnt. Replaced holder and fuse and works fine. I believe it is a 30 amp glass fuse.

Title: Re: Which Fusible Link?
Post by: Seb on February 04, 2021, 07:09:18 pm
Yes that's exactly what I needed to know. 30amp fuse, perfect! Thank you fellas!
Title: Re: Which Fusible Link?
Post by: 75gmck25 on March 05, 2021, 10:27:06 am
On my truck the barrel-shaped fuse holder must have developed some corrosion/resistance, and whenever I put the blower on high it would heat up and start melting the fuse holder.  I decided to purchase a 30 amp blade fuse holder and fuse, and spliced it in as a replacement.

Bruce