Greetings all,

Recently dove into the world of Benz with the purchase of a 1994 E320 Wagon (140K miles). I love the car but as a first time owner, I failed to adequately research the car prior to purchase. In spite of that, I feel I got a decent deal in spite of its problems.

I have been lurking for several months now and already tackled the Blower motor lubrication, and rewired the engine harness from scratch. I have other items yet to tackle but am trying to keep focused on getting the engine right first. I jumped into the Blower motor because I was freezing driving to work the 1st week of December.

I have the classic issues with the engine harness and after much research, obtaining the wiring diagrams, etc, tore into it over a Christmas vacation. I was mostly successfull. The 44 pin connector needs replacement (future junkyard acquisition) and I have several concerns on Polarity and some resistors.

Polarity first. The original harness had been partially modified (ignition and injector wires). I am concerned as to the proper polarity leading to the injectors. The wiring diagram shows a numbered post for the hot lead and the computer lead, but I cannot find a corresponding number on the plug. I used the numbering for all the other MB plug ends with great success but and skeptical for the injectors. I do have photos of the injector wiring before the replacement, however, that wiring was modified and do not trust it. Can anyone help me in the wiring arrangment for these injector plugs?

Resistors Second. I inspected the lead to the MAF sensor and found all the wires in the same state of decay. So I prompted noted my wire positions and began rewiring it. It was not till after I completed the job for the entire car that I noted there are two resistors in the plug leading to the MAF. The first resistor is on the #1 lead (i assume hot) on the MAF plug which connects to Pin 5 on the 44 pin connector behind the battery. The second resistor is at the end of this resistor and ties # 1 lead with #4 lead (ground wire) of the MAF plug (look at the inside of the plug for the numbers) Can any tell me the resistances of these? I hope to put in a small pcb with the resistors to fix my mistake.

Any help is appreciated

Brian

1994 E320 Wagon with some warts