.Howdy -
Some older cars are aided by having relays added into the headlight
circuits ? the 911 especially because the power for the headlight goes
through
the switch (as I understand it) and the relays reduces the load through the
switch. I?m told this makes it possible to use
I am not sure about Porsche, but on the Mercedes it has a circuit to detect
ignition pluses and turns off fuel pump if engine is not running.
So do the ones in my 1970s Saab 99s. They fit in a standard five spade
relay
socket. Want me to check Bosch part numbers?
Porsche part #993 615 227 00.
