JP Group Back-Up Light Switch, 2 Terminal | Porsche 924 1977–1988 & 944 1983–1991 Manual Transmission | OE 084 941 521 (JP-3130-0)
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JP Group Back-Up Light Switch, 2 Terminal — Porsche 924 & 944 Manual, OE 084 941 521 (JP-3130-0)
Short answer: JP Group JP-3130-0 is the 2-terminal back-up (reverse) light switch, OE 084 941 521 (JP ref 1196600200). It screws into the manual transaxle of the 1977–1988 Porsche 924 and 1983–1991 Porsche 944. JP Group also lists it for a number of period Audi models and the Mk1 VW Golf / Rabbit that use the same switch. Sold each.
Fitment
| Years | Vehicle | Notes |
|---|---|---|
| 1977–1988 | Porsche 924 incl. 924 Turbo / 924S, manual transmission | EMPI lists 1979–1988 manual; earlier 924s use the same switch per Porsche catalogs |
| 1983–1991 | Porsche 944, 944S, 944 Turbo, manual transmission | EMPI lists 1983–1991 manual |
| 1970s–1990s | Audi 80 / 90 / 100 / 200 / Coupe / Cabriolet, VW Golf Mk1 (Rabbit) | Listed by JP Group in its application list. Fitment not confirmed for your exact model; compare your old switch. |
| Any | Porsche 924 / 944 automatic | Does not fit — automatics use a different reverse light circuit |
| Any | Porsche 911 / 928 | Does not fit |
Specifications
| Spec | Value |
|---|---|
| Part number | JP Group JP-3130-0 |
| OE reference | 084 941 521 (also written 084-941-521) |
| JP Group reference | 1196600200 |
| UPC | 707924538809 |
| Terminals | 2 (spade) |
| Type | Normally open, closes when reverse is selected |
| Sold as | Each |
| Shipping weight | 0.04 lb (EMPI) |
| Package | 2 x 1 x 1 in (EMPI) |
What's Included
- One back-up light switch
Not Included
- Sealing washer (reuse yours if it is in good shape, or fit a new one)
- Wiring connectors or harness
- Reverse light bulbs
Why It Matters
On the 924 and 944, the reverse lights are switched by a small plunger switch on the transaxle at the back of the car. It lives in a hot, dirty spot, and after 30-plus years the contacts wear or the plunger sticks. Common symptoms include reverse lights that never come on, lights that come on only sometimes or only after a few tries, lights that stay on all the time, or a reverse light fuse that keeps blowing because of a shorted switch. Working reverse lights are required for inspection in many states, and they help other drivers see you backing up. If the bulbs, fuse and wiring check out, this inexpensive switch is the usual cause. Testing is easy: unplug the two wires, bridge them, and if the lights come on with the ignition on, the switch is bad.
Installation Notes
- Raise the car safely on stands. The switch is on the transaxle at the rear of the car.
- Disconnect the battery, then pull the two spade connectors off the switch.
- Unscrew the old switch. A little gear oil may seep out, so have a rag ready.
- Fit the new switch with a good sealing washer and snug it down. Do not over-tighten into the aluminum case.
- Reconnect the wires (the polarity does not matter on a 2-terminal switch), select reverse, and check the lights.
Frequently Asked Questions
Does it fit my 1986 944 with a 5-speed?
Yes. EMPI lists the 1983–1991 944 with manual transmission.
Does it fit a 924S or 944 Turbo?
Yes, on manual cars. They use the same 084 941 521 switch.
Is this the same as OE 084 941 521?
Yes. JP Group cross-references JP-3130-0 to 084 941 521.
My reverse lights don't work. Is it the switch?
Check the bulbs and fuse first. Then unplug the switch and bridge the two wires with the ignition on. If the lights come on, the switch is bad.
Does it fit an automatic?
No. Automatic 924 and 944 cars use a different switch.
What else do I need?
Usually nothing. A new sealing washer is a good idea, and check the gearbox oil level when you are done.
Is it new?
Yes, new JP Group.
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California Prop 65 Warning: This product can expose you to chemicals which are known to the State of California to cause cancer and reproductive harm. For more information, visit www.P65Warnings.ca.gov. Legal for use on pre-pollution-controlled vehicles only.
