[Arne2]

Still could be a relay issue, I'd bypass it to check.

Originally Posted by Arne2

OK. First, the disclaimer. This jumper should NOT be used as a normal replacement for a DME relay. It should be considered as an emergency bypass to get you home in event of a DME relay failure on the road. Be warned that with this bypass in place, the fuel pump will run whenever the ignition switch is in the Run position. (This differs from the actual relay which only energizes the pump while the starter is cranking or the engine is running.)

That said, the jumper is simple. I will not provide a diagram, as looking at the picture below should be enough. The male bullet terminals are the common .157" size, and you should use a relatively heavy gauge wire. Mine is 12 or perhaps 14 gauge. (I can't recall for certain now.)

To use the bypass, you'll need to unplug the harness from the failed DME relay, and then plug the jumper wires into the terminals that would normally connect to the relay terminals marked 30, 87 and 87b. (I put a dab of white-out on the connector to mark the three proper terminals so I wouldn't have to figure it all out again while stranded on the side of the road. See picture below.)

If the DME relay has failed, but everything else is OK, this will get you home. And it shouldn't go bad from the vibration of rattling around in the glovebox for a couple of years, either.

If/when my next relay fails, I may build a replacement instead of buying yet another fragile dual relay. Looking at the schematic and such, I could build a simple replacement to duplicate all the factory functions using a pair of standard 20 amp lighting relays. Parts for that would be available at any FLAPS. That's a future project.