Sign De scrip tion Po si tion Part-No.
FH Main circuit breaker
(40A)
cockpit ETA 2-5700-K12-50A
G1 Battery 12V-28Ah airframe / firewall selection of the
designer
1
G2 Emergency batt.
12V-18Ah
airframe / firewall selection of the
designer
2
M1 Starter motor attached to the engine
M2, M3 Fuel pump, electric airframe / firewall 250.091.001.000
P1 (optional) Indicator lamp cockpit 170.215.120.000
P2 Indicator, oil
temperature
3
cockpit 250.215.010.000 or
170.215.100.000
P3 Indicator, oil pressure cockpit 250.215.010.000 or
170.215.110.000
P4 Indicator, fuel pressure
4
cockpit 250.215.030.000
P5 Indicator, engine speed cockpit 250.215.001.000
P6 Indicator, Water and
EGT
cockpit 250.215.010.000
S1 Emergency-switch cockpit Supplied with engine
S2 Button, starter cockpit selection of the designer
S3 Switch, engine electrics
ON/OFF
cockpit selection of the designer
Y1, Y2, Y3,
Y4
injectors attached to the engine Supplied with engine
MCU Relay box airframe / cockpit Supplied with engine
ECU Electronic Control Unit airframe / cockpit Supplied with engine
Note The wir ing di a gram is to Ger man and ISO stan dards. The sym bols are used to elim i nate con fu
-
sion and com pli ca tion used in other forms of draft ing. For ex am ple, a square is di vided into two
sec tions, the up per sec tion states X4 and the lower 20. This in di cates that a ca ble is con nected to
the ter mi nal pin 20 of com po nent X4. This is iden ti fied from the com po nent list. In the nor mal
op er at ing mode, the en gine re ceives the elec tri cal power from the main bat tery G1. The cir cuit
en er gizes thru the re lay box (MCU) and the fuses.
To elim i nate the pos si bil ity of in ter fer ence by the mag netic field, which can cause inter-action
and in di vid ual cir cuit mal func tion, the wir ing har ness uses both plus (+) and neg a tive (-) leads to
the com po nents. The leads must be in pairs and twisted. This as sists to break down the fre quency
and re duce the in ter fer ence of the mag netic field. Two sep a rate paths of the elec tri cal en ergy to
sup ply the fuel-injection sys tem is used. This is be cause the sig nals pro vided and trans mit t ed
5
Prepared by: J. B. Meyer Replaces edition from: 10.03.86 Page: 5-12
Checked by: Edition: 01.03.1999 Reg. Number:
Installation Manual
L 1700, L2000 and L 2400 Series
1 Lead batteries preferred. For other battery types suitability must be investigated.
2 See note 1
3 Instrument P/N 250.215.010.000 is a combination instrument oil temp / oil pressure
4 The fuel pressure indicator is included in the status indicator
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