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Wally Plumley Relay Bypass

Another Rennlist gem from Wally Plumley. A $10 (short term) replacement for every relay you are ever going to break.

Go to your local hardware store, or Jaycar and purchase:

  1. One metre of two-conductor stranded wire, as is used to connect a table lamp to a power point.

  2. Two male 'spade connectors', which are the flat male electrical connectors.

  3. One single-pole, single-throw toggle switch, automotive style.


  • Attach the switch to one end of the lamp wire. Attach the spade connectors to the other end of the lamp wire.

  • Tape the switch so that the connections can't short to the car.

  • Remove the, ie: dud fuel relay.

  • Insert one connector into terminal 15 in the socket.

  • Insert one connector into terminal 87 in the socket.

  • Flip the switch 'ON' and crank the car.

  • Flip the switch 'OFF' after you turn the ignition off.

  • Order a new relay!

Keep the relay by-pass in the glove box, not in your tool box. You'll need it again some day. - Wally Plumley, 928 Specialists

Please note: these comments are the writer's personal opinions. I take no responsibility nor give any kind of warranty as to the accuracy of the statements included on these pages. The information in Tech Tips is based on the extensive experience of Porsche specialists and owners who drive, service and even race their 928. Although this information is generally considered 'best practice' niether 928 Australia, Landsharkoz or the Webmaster will accept any liability for such information, or, for any use to which it is put. If you have doubts about a specific point, or if you have any questions, you should consult your Porsche specialist or post a question on the Landshark mailing list. - Leonard Zech, Webmaster.

928 Australia 2011