multi battery isolator wiring diagram dodge 2500 cuumins

Multi-Battery Isolator Wiring Diagram for Dodge 2500 Cummings: Understanding Current Draw and Finding Leaks

As a truck owner, it's essential to understand how your vehicle's electrical system works, especially when it comes to multi-battery setups. Recently, I experienced a problem with my Dodge 2500 Cummings where I woke up to dead batteries in the truck. After some investigation, I decided to share my findings and experiences with others who may be facing similar issues.

When troubleshooting electrical leaks in your truck, using an ammeter is crucial. Unfortunately, my cheap little ammeter maxes out at 250 mA (quarter Amp), which limited its effectiveness. To get a more accurate reading, I would have liked to use a bigger ammeter if I had one. However, the device still provided some valuable insights into the current draw.

When I put the ammeter inline, it started at about half the scale and worked its way up to the top, but didn't seem to be pegging out. This led me to believe that my leak was around a quarter amp. To test this theory, I disconnected old batteries and replaced them with new ones for testing purposes. However, I didn't hook up the positive terminal so I could use an inline ammeter to measure current flow.

The experience has taught me the importance of having a bigger ammeter on hand. In addition, it's essential to understand what constitutes normal current draw in your truck and identify affected circuits. By sharing my story, I hope to solicit ideas and experiences from others who may have faced similar issues.

One interesting observation was that even though the ammeter showed no needle movement, it still sparked a little when I touched the terminal to the post. This suggests that there might be some residual current flow present. The second battery had its positive terminal removed and insulated, but was still connected to ground.

The investigation also revealed that the current draw disappeared when I pulled the fuse at the top right of the main section of fuses. This suggests that this particular circuit is affected by the missing fuse. Tracking down the correct fuse box diagram has been a challenge, as I've misplaced the door cover.

In conclusion, understanding current draw and identifying leaks in your truck's electrical system can be a complex task. By sharing my experiences and findings, I hope to provide valuable insights for others who may be facing similar issues. A quarter amp seems like a lot, but it's essential to understand that there are acceptable draws for features like the radio clock and memory.

For those who own Dodge 2500 Cummings trucks with multi-battery setups, I encourage you to keep an eye on your current draw and investigate any unusual readings. With the right tools and knowledge, you can troubleshoot electrical leaks and maintain a healthy and efficient electrical system in your vehicle.

Multi battery isolator wiring diagram dodge 2500 cuumins