Remote Start Tach Please???

[bamaballa05]

hello to all. I have been reading posts from various mercedes sites and have learned alot and saved probably a couple of thousand bucks by simply doing the work myself. I am 21 and id rather spend my money on crap than give it away lol. I've been installing an alarm(first one ever)on my 300E and cant get the remote start to stop grinding my starter.I need a "traditional" tach signal to tell the thing that the car is running. Ive tried coil,dianostic port and even cluster but no wires raise voltage as the rpm raise. It seems to be the opposite......Any suggestions are welcome.If anybody has a good "tachless" setup i will try that.Thanks.