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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: Scaryfastatx on December 02, 2023, 10:12:47 pm

Title: Gauge fuse current rating?
Post by: Scaryfastatx on December 02, 2023, 10:12:47 pm

Hey everybody, curious what current rating is the factory fuse on the gauges circuit?

My original fuse block had a 20A fuse on there

But my American Autowire Classic Update schematic and instructions say it needs to be 5A

But it's randomly popping. I checked the cluster and everything seems fine

Thanks

Title: Re: Gauge fuse current rating?
Post by: JohnnyPopper on December 03, 2023, 06:18:13 pm

Try an amp test and go with a fuse that's 20% higher.

Title: Re: Gauge fuse current rating?
Post by: bd on December 03, 2023, 11:26:57 pm

Per the 1981 C10 factory wiring manual, the "GAUGES" fuse is 20 amps.

Title: Re: Gauge fuse current rating?
Post by: JohnnyPopper on December 05, 2023, 09:33:07 pm

What size fuse are you using?

Title: Re: Gauge fuse current rating?
Post by: Scaryfastatx on December 08, 2023, 08:55:08 pm

Quote from: JohnnyPopper on December 05, 2023, 09:33:07 pm

What size fuse are you using?

5A it's been fine the last week or so. I think maybe hot swapping the fuse for the courtesy light caused it to pop maybe

Title: Re: Gauge fuse current rating?
Post by: Scaryfastatx on December 08, 2023, 08:56:08 pm

Quote from: bd on December 03, 2023, 11:26:57 pm

Per the 1981 C10 factory wiring manual, the "GAUGES" fuse is 20 amps.

Ok awesome thank you.

I'm curious what American Autowire went to a 5A for that circuit