Fuse #9 95 dodge diesel Ram electrical nightmare

Overview

Problem

- The diesel truck stopped running.
- Troubleshooting led to the engine cut-off solenoid.
- Changing the solenoid did not resolve the issue.
- Probing the power to the solenoid revealed a problem with fuse #9.
- The fuse #9 wire had a short, causing it to blow out.

Solution

- Identified a short in the wire jumble behind the firewall.
- The short was on the wire going to the transmission position location switch.
- Fixing the short resolved the issue.

Engine Cut-Off Solenoid

Key Points

- The solenoid has 3 wires: ground and 2 power wires.
- One power wire pulls in the plunger, the other maintains a lesser voltage to hold it up.
- The ignition switch provides power to pull up the solenoid.
- Returning the switch to the run position maintains the lesser voltage to hold the plunger up.

Notes

- The solenoid can be manually pulled up and secured, but this is unsafe and does not allow the truck to be stopped properly.

Fuse #9

Summary

- Despite forums stating fuse #9 is not used, it exists in this 1995 Dodge Ram diesel.
- The fuse #9 wire is small gauge, green with a black stripe.
- The wire connects to a jumble of wires behind the firewall, joining 6 other wires.

Key Points

- The wire jumble is hidden and difficult to access.
- A short in this wire jumble caused fuse #9 to blow out.
- The short affected 6 subsystems, including the transmission position location switch.

Problem

- The fuse #9 wire had a short, leading to the fuse blowing out.
- This short caused the truck to stop running.

Solution

- Identified and fixed the short in the wire jumble.
- Ensured all connections were secure and free of shorts.