J.P. Instruments EDM-700 Pilot's Manual page 54

Fuel Data (input to GPS; output of EDM)
RS-232. Serial data format: 8 data, 1 start, no parity. Baud rate:
9,600.
Output format is determined by the GPS-C setting, but may be over-
ridden by the GPS navigation format: If the EDM senses Northstar or
NMEA-183 navigation data input, there will be no fuel data output.
Section 15 - Option Connector Pin Assignments
P1 (upper) 25-pin connector
for 4 or 6 cylinder engines.
See installation manual for
7, 8, 9 cylinder instruments
Pin Pin Probe or
no. no. function
yel 1 red 2 OIL
yel 3 red 4 IAT
yel 5 red 6 CARB
(or CDT)
yel 14 red 15 OAT
yel 16 red 17 TIT
yel 18 red 19 TIT-2
nd
(2 TIT)
gry 12 Remote
alarm
red 13 + Power
14/28 vdc
wht 24 RS-232
data port
blk 25 Ground
at Engine
Interface connections to selected GPS models
EDM
Arnav 5000
Garmin 195
Garmin 430 / 530
Northstar M3P
UPS GX50 / 60
Page 50
MAP-RPM 9-pin
connector (EDM-800)
Pin Function/
no. sensor pin
grn 1 RPM sig /1
blk 2 RPM grd /2
red 3 RPM pwr /3
red 4 MAP pwr /3
blk 5 MAP grd /1
blk 6 Oil P. term
wht 7 Oil P. term
wht 8 MAP sig+ /2
grn 9 MAP sig- /4
Fuel flow conn Pin 1 Fuel flow conn Pin 2
Pin 4 Pin 5
(nc) Pin 4
Pin 57 Pin 56
(nc) Pin 6 (leave pin 11 open)
Pin 4 Pin 5
Engine Data Management
Fuel Flow Option
15-pin connector
Pin Function
no.
1 RS-232
out
2 RS-232
in
wht 4 FF signal
red 5 FF power
blk 6 FF return
7 Switch
com
8 Switch
EGT
9 Switch
FF
11 Remote
FF alarm