Dodge D350 Back Up Light Switch Guide: 1981-1993
Get your reverse lights working again by diagnosing and choosing the right back up light switch for your first-generation Dodge D350.
- Verify your transmission type (manual or automatic) before ordering, as the switches are different.
- Always check the bulbs and fuses first to avoid replacing a perfectly good switch.
- For manual transmission models, be prepared for a difficult replacement that requires a special, modified deep-well socket to access the switch.
- Aftermarket brands like Facet and Standard Ignition are reliable replacements for this part.
Is Your Back Up Light Switch Failing?
A faulty back up light switch on a Dodge D350 presents some obvious symptoms. Because these trucks have simple electrical systems, troubleshooting is usually straightforward. Watch for these signs:
- No Reverse Lights: This is the most common sign of failure. When you shift into reverse, the lights do not turn on at all.
- Intermittent Lights: The reverse lights flicker or only work sometimes when you shift into reverse. This can point to a worn-out switch or a loose electrical connection.
- Lights Stuck On: Less common, but the switch can fail in the 'on' position, leaving your reverse lights illuminated even when you are not in reverse. This can drain your battery and confuse other drivers.
Check the Easy Stuff First
Before you replace the switch, always check for blown bulbs and test the fuse for the backup light circuit. On these older trucks, a corroded bulb socket or a bad ground wire can also cause the lights to fail. A simple test is to use a jumper wire at the switch's electrical connector to see if the lights come on; if they do, the switch is likely the problem.
Choosing the Right Aftermarket Switch
When shopping for a new back up light switch, the most important factor is your truck's transmission type. The switch for an automatic transmission is different from the one used on a manual transmission.
Warning: Manual vs. Automatic
The back up light switches for automatic and manual transmissions on the 1981-1993 D350 are not interchangeable. The automatic version is often integrated with the neutral safety switch on the side of the transmission case, while the manual version is a standalone switch on top of the gearbox. Always verify which transmission your truck has before ordering.
For this generation of Dodge truck, new OEM Mopar parts are often discontinued or very difficult to find. Aftermarket brands like Facet and Standard Ignition (Standard Motor Products) are reliable and widely available alternatives. Both are established companies that produce quality components that meet or exceed original specifications. There is no significant quality difference between these brands for a simple part like a switch, so choosing based on price and availability is a sound strategy.
Aftermarket Back Up Light Switch Cost for 1981-1993 Dodge D350
| Part Type | Estimated Cost |
|---|---|
| New Aftermarket (Facet, Standard Ignition) | $26.65 - $37.88 |
| New OEM (Mopar) | Likely Discontinued |
| Shop Labor | $100 - $225 |
Frequently Asked Questions
Where is the back up light switch located on my D350?
For automatic transmissions, look on the driver's side of the transmission case, where the shift linkage connects. For manual transmissions (like the Getrag G360), the switch is on the top of the transmission, accessible from underneath the truck on the driver's side. It can be difficult to see and reach.
Can I replace the back up light switch myself?
Yes, this is a feasible DIY job for someone comfortable working under their vehicle. The difficulty varies by transmission. On automatics, it's generally straightforward. On manual transmissions, the switch is in a very tight spot, and you will likely need to modify a 15/16" or 24mm deep well socket by grinding down its outer wall to get it to fit.
Are there any recalls for the back up light switch on my truck?
No, there are no specific recalls or widespread Technical Service Bulletins (TSBs) from Dodge or the NHTSA related to the back up light switch for the 1981-1993 D350. Failures are typically due to normal wear and tear over decades of use.
My reverse lights still don't work after replacing the switch. What now?
If a new switch doesn't solve the problem, the issue is elsewhere in the circuit. Check the fuse again, inspect the bulbs, and look for corrosion in the bulb sockets. The most likely culprit is a break or short in the wiring between the switch and the tail lights, or a bad ground connection. Tracing these old wires can take time but is necessary to find the fault.
Technical Specifications
Fitment is specific to transmission type. Automatic transmission switches are often combined with the neutral safety switch. Manual transmission switches are standalone units.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Dodge D350: