16v fuel pump relay + standalone EFI = relay clicks?!

[jdbubb at verizon.net (Dan Bubb)]

The 8V relay is the "smart" relay in that it not only gets a 12V signal input but also needs to have input from the coil to stay closed. It also can have an in-built rev limiter.
The 16V relay is a simple relay. It's coil gets grounded directly thru the KS ECU. The KS ECU does all the hard stuff like determining if the engine is still running or not!
Check out the "electronic engine controls -16V" schematic in chapter 13 of the Bentley.
If the VEMS is similar to the MS it has a dedicated output for the fuel pump relay you can simply take the fuel pump wire that was connected to the KS ECU and connect that to your VEMS (providing that all the VEMS does is ground the signal as opposed to provide 12V to it.)
Dan

From: "Koabi Brooks" <koabi@seeohdee.com>
Sent: Monday, September 18, 2006 9:09 PM
Subject: 16v fuel pump relay + standalone EFI = relay clicks?!


Normally are the 16v fuel pump relays ECU/knock box triggered?  That's how I
have it set up with my VEMS box, but seemingly randomly I get a relay click
- physically it feels like the fuel pump relay is doing it (though its tough
to tell while I am driving).  I do notice a slight hesitation when the
problem happens

Is this a "smart" style relays or just a normal relay?

Trying to get some insight...

Thanks,
koabi


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