Window Switch Install (nitrous)?
Senior Member
Joined: Aug 2004
Posts: 287
Likes: 1
From: SoCal
04 E55
I'm guessing you didn't get an answer in your other thread . . . sorry to hear that.
While I'm not sure where the pickup is on the Mercs, I've dealt with this before on other coil-per-cylinder applications. You typically have 2 possibilities. One is to try to get a signal off of one of the wires in the coil pack's wiring harness. Sometimes one of these wires will carry a usable signal. Your other option is to tap the rpm signal wire running into the ECU. For this you'll need to track down either a wiring diagram or just someone who knows.
Sorry I can't offer more specific help, but considering your previous lack of success with this topic, I thought I'd chime in with whatever I could.
GOOD LUCK ! ! ! ! ! ! !
While I'm not sure where the pickup is on the Mercs, I've dealt with this before on other coil-per-cylinder applications. You typically have 2 possibilities. One is to try to get a signal off of one of the wires in the coil pack's wiring harness. Sometimes one of these wires will carry a usable signal. Your other option is to tap the rpm signal wire running into the ECU. For this you'll need to track down either a wiring diagram or just someone who knows.
Sorry I can't offer more specific help, but considering your previous lack of success with this topic, I thought I'd chime in with whatever I could.
GOOD LUCK ! ! ! ! ! ! !
