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.

Year .........

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A Dalton

it is a 1989 300E.....I cant find a tach signal that increases.

Schematic for '89 124 shows pin10/TD [ gn/yl] at FP relay or pin 25 at CIS control [ gn/yl]. But that sig may be pulsed, not V. on that system.

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A Dalton

thank you I will try this and see what happens.....I think i can go tachless but this crappy alternator cant send enough volts to tell the brain that its running. Do you know if those S-Class AL0162X(140 Amp) alternators will fit my 89 w-124

[To Answer your question: Yes only it's 143 Amp]

GSXR's post on ALT swappage:

http://www.peachparts.com/shopforum/showthread.php?t=53238&highlight=alternator+swap

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'84 300SD sold
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