tach

[dokarex]

Anyone know what has to be done (or if it can be done) to wire a 96 jetta diesel tach into a 87 Diesel Vanagon(it came from Germany as a diesel not a gasser) with a AAZ engine

[burn_your_money]

The mk3 clusters are a lot more complicated then the mk2 ones. I seem to recall someone saying that the mk2 one bolted into the Van cluster but could be way out to lunch on that. I have never seen a vanagon.

[Vincent Waldon]

The pin-outs to both clusters are available so it should be possible to cross-wire things electrically... and since the 96 Jetta donor probably had an AAZ engine as well the tach will probably be OK... no difference in pulley sizes like there is when you go MK2 - MK3 from an engine perspective.  You'll need to find a junkyard to grab a MK3 cluster pigtale.

The only hurtle that springs to mind is the speedo... the new cluster is expecting an electronic  VSS signal to drive the speedo,  while your 87 Vanagon probably used a cable drive to drive the original cluster.

If this was a standard car you could just yank the cable gear from the tranny and drop the electronic transducer in its place, but all of the vans I ever played with drove the speedo off the front wheel.  If so you might need to find a mechanical drive converter (or kludge one up).