I'm in need of a wiring diagram if all possible for my '90 W250 non-intercooled CTD with a 727/NP205. I bought this truck and the wiring harness that runs to the VSS and neutral safety switch on the trans is completely missing. There is a 10 pin weatherpack connector on the main wiring harness under the hood that harness that I'm missing should plug into. PO has jumped a couple wires to by pass the neutral switch and the speedo is in-op of course. I've searched all around but apparently this is a '90 ONLY wiring because 89 had the speedo CABLE and 91 has OD trans with the module. I'm more than willing to just build my own harness to get all the stuff working but have no idea what each pin in the connector goes to or controls

 

$35 plus shipping

http://www.genosgarage.com/1990-DODG...nfo/DFSM90_CD/

or if you want the hard copy it will cost you $120

 

It is difficult to find all the relevant pages, as has been said, the 35 bucks to get a FSM on CD is the best thing you will ever do.

That being said, here is some of the info I found for you.

 

I just ordered the FSM from Genos for my 92. I've been using the 93 FSM for a while now, but I think there are some things different in the 92's that I may need sometime.

With shipping it cost me about $44, but well worth the money spent.


EBAY has used FSM in paperback form for under $30, but not sure what you would be getting in a used mechanics book without actually seeing prior to purchase.