Black Box V5.1 Anleitung zur Fehlerbehebung PDF herunterladen (Seite 14)

Euro MotoElectrics, 25958 Genesee Trail Road PMB 321 Golden, Colorado USA 80401 EDL-IGN Page 14 of 43

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EnDuraSpark Electronic Ignition

Installation & Troubleshooting v5.1

Coil Wiring

The original BMW ignition uses two identical 6V coils wired together in series with a black

jumper wire between the inside terminals- this set up must be retained in order for the

EnduraSpark ignition to work properly, otherwise damage to the Black Box will occure!

Connections to the coils are made at two places. The outside terminal of the left coil is the

“switched power” 12 volt connection with a green wire that goes to the ignition switch. The

outside terminal of the right coil is the “trigger” connection with a black wire that goes to the

condenser and points under the front engine cover.

All 1970-1986 BMW motorcycle ignition systems are wired like this. If the engine has been dual-

plugged, the updated dual-output coils will be wired in the same way. If the bike has aftermarket

coils (Dyna, Accel, etc.) they will also be wired in this way.

1986 -1990, all G/S and GS models had a single Dual Output coil which is not compatible with

the EnDuraSpark Ignition system. They must be replaced with any of the recommended coils as

described on page 6 and 7 of the Product Information guide

1991-1995. BMW changed the “switched power” connections requiring the use of a relay. Proceed

to step 14, “Wiring for models 1990-1995”

In all cases, ensure that the coils are indeed connected together in “series”- Only one coil is

connected to the switched power and only the other coil is connected to the trigger wire. Then a

single jumper wire joining the “powered” coil to the second coil as shown in the above diagram.

Verify proper coil connection by putting an ohm meter on the power terminal of the left coil and

the trigger terminal of the right coil. The meter should read 2.8 ohms resistance. If the reading is

1.4 ohms, re check the wiring. Incorrect wiring will cause the ignition module to over heat and fail

There were some variations. The green wire became a green/blue wire on later models. For bikes

with electronic tachometers, there is a second black wire at the trigger connection Some wiring

schemes had two green wires at the switched power connection as well.

Trigger

Connection

Switched Power

Connection

To points & condenser

To ignition switch

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Black Box V5.1 Anleitung zur Fehlerbehebung Seite 14