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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: Jul 2014 Posts: 1,293 Moderator for Tons o' Fun , Co-Moderator Driveline Forum | | Moderator for Tons o' Fun , Co-Moderator Driveline Forum Joined: Jul 2014 Posts: 1,293 | Installed 12V Heater blower motor in my recirulating heater on the 54' 3600. What would be the correct size in-line fuse to use?
Ron - - Dusty53 1954 Chevy 3604In the Gallery Forum "You can't dance with the Devil and then wonder why you're still in Hell."
"They will forget what you've said, and they will forget what you have done but they will never forget the way you made them feel." | | | | | Joined: Dec 2000 Posts: 3,399 Gas Pumper | | Gas Pumper Joined: Dec 2000 Posts: 3,399 | 10 Amps is 5 amps more than the motor will generate on a regular basis. Since there is no 'correct' fuse for that modification, I would go with 10. You can see normal amperage readings here: http://devestechnet.com/Home/Native12VUpgradein the Heater section, but the most I have seen with a PM354 12v replacement motor is a little less than 4 amps. | | | | | Joined: Jul 2014 Posts: 1,293 Moderator for Tons o' Fun , Co-Moderator Driveline Forum | | Moderator for Tons o' Fun , Co-Moderator Driveline Forum Joined: Jul 2014 Posts: 1,293 |
Ron - - Dusty53 1954 Chevy 3604In the Gallery Forum "You can't dance with the Devil and then wonder why you're still in Hell."
"They will forget what you've said, and they will forget what you have done but they will never forget the way you made them feel." | | | | | Joined: Mar 2004 Posts: 6,236 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 6,236 | Fuses are not installed to protect the motor, they are there to protect the wiring. 10 Gauge wire = 30 amp fuse 12 Gauge wire = 20 amp fuse 14 Gauge wire = 15 amp fuse 16 Gauge wire = 10 amp fuse 18 Gauge wire = 5 amp fuse Hope this helps, Mike B  | | | | | Joined: Jun 2012 Posts: 1,749 'Bolter | | 'Bolter Joined: Jun 2012 Posts: 1,749 |
Steve H
| | | | | Joined: Apr 2005 Posts: 177 'Bolter | | 'Bolter Joined: Apr 2005 Posts: 177 | | | | | | Joined: Dec 2000 Posts: 3,399 Gas Pumper | | Gas Pumper Joined: Dec 2000 Posts: 3,399 | The recommended wire size depends on what is being wired. So when they decided 16 gauge was correct for the heater as well as most systems on the vehicle, they must have done that because some day Deve would recommend a 10 amp fuse! LOL! | | | | | Joined: Jul 2014 Posts: 1,293 Moderator for Tons o' Fun , Co-Moderator Driveline Forum | | Moderator for Tons o' Fun , Co-Moderator Driveline Forum Joined: Jul 2014 Posts: 1,293 | Thanks again , everyone, Merry Christmas !
Ron - - Dusty53 1954 Chevy 3604In the Gallery Forum "You can't dance with the Devil and then wonder why you're still in Hell."
"They will forget what you've said, and they will forget what you have done but they will never forget the way you made them feel." | | |
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