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Global Mod,
Mod | | | Forums66 Topics128,172 Posts1,057,038 Members48,458 | | Most Online14,466
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: Nov 2017 Posts: 41 Fixer of Things I Probably Broke | | Fixer of Things I Probably Broke Joined: Nov 2017 Posts: 41 | Adding an electric wiper (and also a USB charger port which is kind of related) to my 12 volt system, and just wondering if there's an optimal place to splice these into the system?
I don't have any kind of fuse panel... Wiper has an online fuse. And while I assume I could probably splice it in anywhere that's hot when the key is on just wondering whether there is a best practice.
Probably overthinking.
1953 Chevy 3100 Frankentruck with 235 and mostly original bits.
| | | | | Joined: Sep 2015 Posts: 81 'Bolter | | 'Bolter Joined: Sep 2015 Posts: 81 | The load side of the ammeter is my first choice, just remember to disconnect the battery first.
Steve
1946 1/2 ton
| | | | | Joined: Oct 2005 Posts: 4,259 "Hey! I sound like Darth Vader!! | | "Hey! I sound like Darth Vader!! Joined: Oct 2005 Posts: 4,259 | Maybe it's time to add some accessory wiring/wiring panel. | | | | | Joined: Feb 2019 Posts: 4,506 AD Addict & Tinkerer | | AD Addict & Tinkerer Joined: Feb 2019 Posts: 4,506 | Couple of things to think about. The USB charger you may want to be on the un-switched side of you ignition. This way you can charge your phone without burning out your coil or points/condenser or running the engine. It should also be fused.
The wiper should go on the switched side of you ignition switch and also be fused.
Personally, I would install a fuse box (as MNSmith suggested) that has the ability to have switched and un-switched circuits. Take the switched side from the load side of the Ammeter (as Wheelie suggested) and the switched side from the ignition switch. This way you can add other circuits as you need.
If you don’t want to add a fuse box, just wire it to the points that were pointed out before.
Phil Moderator, The Engine Shop, Interiors and Project Journals1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc BrakesProject JournalsStovebolt Gallery Forum | | |
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