Positive painted red, painted black negative. Check whether the motor column is oxidized and cleaned, and remove the oxide layer to increase the electrical conductivity of the motor column.
eBay
500A Dual Battery Isolator Auto Start Contactor Car Relay 12V 24V Terminal Power Switch Auto Starter Solenoid
Aliexpress UK
1 Auto battery clamp link switch. Material: Zinc alloy. Interrupts the entire circuit by simply turning the knob, which is simple and easy for you to operate. Suitable for 6V, 12V and 24V, you can use the battery switch for disconnecting the battery without tools.
eBay
20PCS KF128-2P 5.08mm KF128 2 Pin Green Connect PCB Terminal Screw Terminal Connector Splice connector GMOPNRQ
Aliexpress UK
Crafted with pure copper tin plated, providing a high degree of conductivity for maximum current flow. Strong and durable. Specifications：.
eBay
10/50PCS PCB Terminal Block Connector Pitch 5.0mm KF301 Straight Pin 2P 3P Screw PCB Terminal Blocks Connector Assortment Kit
Aliexpress UK
eBay
10-75 Pcs Orange Universal Type Quick Plug-in Terminals,Electrical Equipment Connectors,Wire Connector Terminals,250V/32A
Aliexpress UK
Their secure grip design allows for easy installation while maintaining a firm connection, making them ideal for cars, vans, and other automotive applications. Built for durability and efficient conductivity, they ensure consistent current flow and help reduce power loss during operation.
eBay
400PCS Solder Seal Sleeve Heat Shrink Butt Wire Connectors Terminal Waterproof Kit Insulated Wire Connector Terminal Kit
Aliexpress UK
⚡ Quick Release Design. Easily connect and disconnect your battery in seconds—no tools required. ✨ Key Features 🚗 Multi-Vehicle Use.
eBay
100pcs Solder Ring Terminal Sealed Heat Shrink Tube Wire Connector Heat Shrink Quick Terminal Waterproof Quick Butt Connector
Aliexpress UK
• Application: Automotive Battery Cable Connection. Quick Release Design. Easily connect or disconnect your battery without tools, making maintenance faster and safer. Made from aluminum alloy for efficient power transfer and long-lasting performance.
eBay
50PCS Pure Copper Spade Terminals Insulated Fork Crimp Terminals Wire End Connectors SV1.25/2/3.5/5.5-3/4/5/6/8 Cable Connector
Aliexpress UK
Wind Deflectors. Check whether the motor column is oxidized and cleaned, and remove the oxide layer to increase the electrical conductivity of the motor column. Car Care & Cleaning. Exterior & Body Parts.
eBay
VE Tubular Crimp Terminals,Cable Electrical Connector,Insulated Wire Connectors,Tube Type Terminal Crimping Pliers HSC86-4
Aliexpress UK