Subaru to 914 trouble fixes, My quick fixes installing a Subaru engine Options

[904svo]

Here are some of the fixes I used when installing a 2007 Subaru WRX engine in my car.
I did not want to change any of the wiring in my car as it has a 1973 914 wiring harness installed
in it. I wanted to keep the stock gauge cluster in it but adapt it to a Subaru engine to look stock.
Here are some of the troubles I found and the fixes I used

#1 Tach
Convert the 5 volt output signal from the Subaru to a high voltage pulse that the 914 tach requires.

#2 Starter circuit
Added a hot starter relay which removed all the Subaru starter check circuits

#3 Stop Fuel level DTC’s
Note if connected to 914 low warning , this will reduce power level

#4 Add Cruise control lights/Check engine lights for trouble shooting DTC’s

#5 Make the 914 ignition key look like a Subaru ignition key for the immobilizer circuit

#6 Oil light and Oil pressure gauges/ Oil temperature gauge converted to Engine temperature gauge
To convert Oil temperature to Water temperature gauge add a 75 ohm resistor in series with the
extra temperature lead ( used for stock Subaru gauge panel) to the oil temp gauge
If you have a Oil pressure/Oil light sender added to your gauge cluster just replace the Subaru Oil
Pressure switch and use the same wiring otherwise just wire the Subaru sensor to the Oil lamp.
Connect the Subaru alternator (Black/white) lead to the 914 Gen lamp bulb.

If you see any poroblems let me know.

[dian]

very interesting.

what about the speedometer?

[904svo]

very interesting.

what about the speedometer?

If you use the Subaru transmission the VSS is build in and you can use a late model
Porsche speedometer.
If you use a 914 transmission you use the mechinical drive off the back of the transmission to drive the stock speedometer and you have to install a VSS circuit
on one of the output flanges with either 4 or 5 impulses per rev.