Direct Fire CDI Autronic 500R
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The Autronic CDI has four channels; these can be used in any order. To save any confusion during wiring it is best to keep the CDI input and sequence 1, 2, 3, 4 and the output sequence the engine firing order.
A good way to do this is to write down the SM4 Ign O/P sequence, CDI trigger I/P and engine firing order on a piece of paper before wiring.
Example:- 4 cylinder engine four coils with a firing order 1, 3, 4, 2.
SM4 Ign O/P sequence 1, 2, 3, 4
CDI Trigger I/P sequence 1, 2, 3, 4
Ignition coil number 1, 3, 4, 2
Example:- 4 cylinder engine two coils (wasted spark) with a firing order 1, 3, 4, 2.
SM4 Ign O/P sequence 1 2
CDI Trigger I/P sequence 1 2
Ignition coil number 1 & 4 3 & 2
Example:- 6 cylinder engine six or three coils (wasted spark) with a firing order 1, 5, 3, 6, 2, 4.
SM4 Ign O/P sequence 1 2 3
CDI Trigger I/P sequence 1 2 3
Ignition coil number 1 & 6 5 & 2 3 & 4
CDI only has two –ve coil outputs and these are wired to the appropriate ignition coil matching +ve Coil outputs.
Trigger ground on the CDI is not used.
CDI PIN DESCRIPTION
1 COIL 3 +VE
2 COIL 4 +VE
3 COIL 3&4 –VE
4 TRIGGER 3 I/P
5 TRIGGER 1 I/P
6 TACHO O/P
7 COIL 1 +VE
8 COIL 1 &2 –VE
9 TRIGGER 4 I/P
10 TRIGGER 2 I/P
11 POWER SELECT, GROUND FOR HIGHPOWER
12 IGNITION SWITCH I/P
13 COIL 2 +VE
14 GROUND, KEEP SHORT AND TWISTED
15 GROUND, KEEP SHORT AND TWISTED
16 TRIGGER GROUND, NOT USED
17 + 12 VOLT BATTERY
18 + 12 VOLT BATTERY
The HF version of the Autronic CDI will multispark if Dwell is > 0,8 mSec and single spark if 0,7 mSec or less. The multispark works up to higher (more then 5000 rpm)
Very easy if you want multispark at low rpms, just use the dwell table.
Take extra caution when looking at the pin out so you do not wire it in a mirrored state, picture looking into connector