Dash01

Just above the DME plug on the wiring harness of my friend's '87 951 there is a small plug with a jumper wire joining its two female connections. The label on this plug says " 944.612.525.01 Stecker F.DME Kurzschluss ".

What is the purpose of this small jumper wire? My '86 951 (which uses the same DME unit) does not have such a jumper wire, so I'm wondering if it should. Please advise, and thanks.

sweanders

Kurz = Short
Schluss = Close

I haven't noticed it myself but it sounds like itäs used to create a locked circuit.

Sorry about the bad english but I have to translate it from German-Swedish-English and don't have a vocabulary big enough..

Jeremy Himsel

It's for California emissions purposes. I pulled one on the dyno and the car ran leaner without it installed.

Waterguy

There are two jumper loops on the DME cable that allow the DME to select one of the four sets of fuel/timing maps contained in ROM. US/Canadian/Aussie models do not use either jumper. California/Japan cars use the coding plug (944.612.525.01). ROW cars use the impedence adapter (944.612.421.00). Swiss/Swedish cars use both.