CDI Compatibility

[Calum]

All credit goes to NEV from his post on the activeboard.

A few people in here are trying to use other CDI's to replace their standard CDI's as a method of de-restricting the rev limiter within the CDI unit on the older model DT's, or just as a replacement for a faulty one.

The CDI's mainly being used as a compatable replacement are the 4DL (TZR Italian import) 3SH (TDR Italian import) , and 4HW (TZR GB model), there are others no doubt that can be used but haven't the wiring info on those.

Yamaha has a number of variants: 4BN; 4CL; 4DL; 4FL; 4GM; 4HE; 4HW; 4HX; 4JB.
DIFFERENT CDI CODES PER COUNTRY
The Swiss market 4DL are known as 4HE.
4DL - ITALIAN IMPORT
4JB - BELGIUM, GREECE,PORTUGAL MARKETS
4HW - BRITISH MARKET
4HX - SWISS, FINNISH, AUSTRIAN MARKET.

The colour coding on the wires on the 4HW CDI's pretty much correspond with the 3bn, 3mb CDI's barring 2 or 3, but have traced them to the componants they go to now. I'll try and find the wiring codes for the 4DL, and post in here later.

Standard wiring on the DT125R CDI (3BN, 3MB) for models 3RN1 - 3RN9

11 Wires

White/Red - Magneto

Black (White/Blue from Magneto) - Magneto

White/Green - Magneto.

Black/Red - Magneto.

Orange - Coil.

Blue - Clocks,& Dash Lights circuit.

Black/Yellow - Powervalve Servo Motor.

Black/White - Kill Switch circuit.

Blue/Yellow - Sidestand Switch.

Black - Earth.

Light Blue - Oil level Sender Switch,& Magneto to Neutral Switch circuit.

Standard wiring on the 4HW CDI

11 Wires

White/Red - Magneto

White/Blue - Magneto

White/Green - Magneto.

Black/Red - Magneto.

Orange - Coil.

Black/Yellow - Powervalve Servo Motor.

Black/White - Kill Switch circuit.

Blue/Yellow - Sidestand Switch.

Black - Earth.

Blue/White - Neutral Lamp.

Black/Blue - ?

The only wire I'm having problems tracing back is the Black/Blue wire, when I do sort it I'll edit into the list later.

Standard wiring on the 4DL CDI

10 Wires

White/Red - Magneto

Black (White/Blue from Magneto) - Magneto

White/Green - Magneto.

Black/Red - Magneto.

Orange - Coil.

Blue - Clutch Switch.

Black/Yellow - Powervalve Servo Motor.

Black/White - Main Ignition Circuit

Blue/Yellow - Ignition Switch Relay,& Sidestand Switch circuit.

Black - Earth.