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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Sep 2009 Posts: 71 New Guy | | New Guy Joined: Sep 2009 Posts: 71 | Looking for a little direction here please.
I am rebuilding a '54 Chevy truck, first time ever working on cars. I noticed that there is an inline fuse from the ignition that I assume goes to the lights?! Anyway, I bought some 20 amp fuses but they keep popping out. Looks like either the fuses are too long or I might need to replace the connectors?
Is there a recommended fuse length? Also, are 20amp fuses the right ones? There looks like there is a separate inline fuse set up to wire to the radio.
Thanks for your help! | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | An inline fuse from the ignition is added. It probably isn't for lights. There is a thermal breaker for them in the switch. You need to trace the wire. It might be going to a heater motor or? | | | | | Joined: Sep 2009 Posts: 71 New Guy | | New Guy Joined: Sep 2009 Posts: 71 | Thanks for the tip, I'll check it out. | | | | | Joined: Mar 2010 Posts: 13 New Guy | | New Guy Joined: Mar 2010 Posts: 13 | Do you know what happened to the original fuse? Well, the best advice I can give is you don't want to put the wrong amp fuse in. The fuse is a safety device that prevents the wires from burning up and messing up whatever the circuit is feeding. So in a nutshell it is the weakest link of the circuit. Is there any indication on the wire (18awg/20awg)? I doubt there will be any markings on the wire, but this is what the size amp fused is based on. Your best bet as cletis stated you might want to trace the wire to see where it goes.
Chevy 1956 3200
"So she said, "either I go or the truck goes!"....Hmm, I wonder what she's doing these days?"
| | | | | Joined: Mar 2010 Posts: 13 New Guy | | New Guy Joined: Mar 2010 Posts: 13 | Do you have overdrive? I was looking at a digram today and the fuse looks like it might go to your solenoid relay for the overdrive system. This was off a 1955 3200 so I am not positive if your truck is the same. Good luck!
Chevy 1956 3200
"So she said, "either I go or the truck goes!"....Hmm, I wonder what she's doing these days?"
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | If you are saying that the fuse holder is coming apart, you may have the wrong physical size of fuse. I think there are two lengths of mini fuses. You should feel a positive engagement of the holder and after twisting it should not be possible to pull it apart. | | | | | Joined: Sep 2009 Posts: 71 New Guy | | New Guy Joined: Sep 2009 Posts: 71 | I appreciate all the insight, I have been away a little while. I will trace the wire and see where it takes me. There were two, one came from the stereo.
I don't have the overdrive, and I recently swapped engines so I know I don't have it now.
I think the fuse might be a little big, but at the same time the two engagements don't "latch" together. It twists, but then does not latch.
Again, thanks for the help. I am feeling my way around this thing. It is a great little project to have and I am really appreciating it.
Cheers,
Carlos | | |
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