Date:         Thu, 4 Feb 1999 09:41:29 -0600
Reply-To:     Darrell Boehler <midwesty@MIDWEST.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Darrell Boehler <midwesty@MIDWEST.NET>
Subject:      fuse for fuel injection components
Content-Type: text/plain; charset="iso-8859-1"

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Hi Volks,
    I have had several questions / inquires about fusing the ecu, fi (fuel
injection) cable, idle stabilizer, fuel pump, injectors, O2 sensor heater
etc  that I mentioned in a post  earlier this week so here is the
information as best I can describe it for installing an inline fuse. I feel
the best place to put the fuse is in the relay box above the coil. Not sure
where the relay box is on a   digijet but it has the same setup, at least it
is the same on an 84 fi harness, thanks Tim.
     Inside the relay box you will note a red / almost pink wire from the
external connector to a relay, then there is a red jumper wire from this
relay connection to the other relay. This is where plus battery voltage
enters the system. One of these relays is the fuel pump relay the other is
the ecu relay.  I installed an inline 10 amp fuse between the external
connector and the first relay by cutting the wire and soldering in the fuse
holder.  Things are a little tight inside the relay box if one wanted more
room, like for inline splice connectors,  locate the external wire that
connects to this red wire and splice into it. There is plenty of room
outside the box. Either place / method will protect the electronics very
nicely. I prefer solder connections but then I am one of the old farts on
the list and have been into electronics since 1960.
    If you go the external route Bentley shows the external wire bringing
plus battery to the relay box as being red. I feel you can just use the red
wire and fuse it. It is red on an 86, 87 and on the 84 harness. If you are
still a non-non beliver sometimes the red and red with black trace are
twisted inside the connector shield. Roll back the shield and check, or use
the hat pin in the wire trick and find the red wire that has plus battery
with the key off.
Darrell