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What is the part number on the fuel pump relay? I heard of those special relays after I did my relay panel, and saw one on CSP for 60Eur or something. But I think all the old fuel injected watercooled VW's have it too. Just gotta find out the number that should be on it. I saw that all VW relays have that big number on top of them.
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Factory part number 443 907 385 will work. Otherwise look up a relay for a 1985 Audi 4000 quattro. Part number may be different, but they are interchangeable.
http://www.rockauto.com/dbphp/x,carc...ump_Relay.html
Relay Terminal | Description | Connect To
15 | Switched +12V | Coil (+)
31 | Ground | Chassis Ground
87 | Fuel Pump Power | +12V Directly from Battery (remember to add inline fuse)
30 | Switched/Fused Power | Fuel Pump (+)
31b | Trigger Input | Coil (-)
The circuit requires that the coil be in the circuit. Just applying 12V to the trigger input is not enough. The circuit relies on the higher voltage pulse that is generated by the coil. Not sure how you would use that with Megajolt. I have successfully used these relays in tonnes of cars, including a '77 mustang with weird Ford electronic ignition.
HTH,
-Dave