dme keeps blowing

[frenchi]

198918i coup auto, changed over to preface25i manuel with no problems. but know keeps blowing dme, as soon as ignition is turned on ,did have a prob in beginning with this, but picked up green ignition wire to dme and all was ok but not now,any help will help,, come on brian you can sort this out,,

[daimlerman]

Green wire runs from ign switch to coil.
I have never had a DME relay fail.

[Speedtouch]

Do you mean the ECU keeps blowing, or the DME relay?

[frenchi]

do its dme relay,i had to find another live rout to power up dme from ignition I was told to take power from green wire,if you know another route to power up relay ,I think the green wire might be the prob hope you can help

[daimlerman]

DME should be powered by red/white.

[Speedtouch]

Which relays are you using - OEM BMW ones, or aftermarket?

[frenchi]

bmw ones on the reay wiring live in is ok but you need another to then send to earth which makes relay work this part of wiring has a problem on the alarm side so had to rerute ,maybe to much current on main green if going to coil,,hope you can understand this

[frenchi]

if you wire relay, all three in line together with a piece of wire starts like a new motor

[Speedtouch]

Sounds like you need to feed the DME relay with a different ignition switched live.

There should be a few to choose from, e.g., the one that goes to the stereo head unit, etc.

[frenchi]

will give it a go, many thanks