98 AHU wiring help

[cbandy]

Wiring harness in... no instruments tach speedo or indicator lights, odometer & clock Work. Jump started runs and throttles and key shuts the engine off. The key switch has Power but doesn't get to starter. What could be causing this? Glow plugs work, but no Light in cluster nothing there. Bentley seems to be confusing... got ross software on its way
.... needing assist
Chris
Cbandy@crowder.edu

 

[compu_85]

What car did you do the swap into? What wiring did you change?

-J

 

[cbandy]

81 pickup from 98 jetta, whole harness but it was rmvd prior to owning it. I'm getting power to key switch but nothing at starter. No tach speedo or warning lights, but clock and odometer works all time.

Chris

 

[G60ING]

starter power is probably due to the alarm not being present. Jumper the starter wire.

What cluster and cluster wiring are you using?

 

[Lug_Nut]

Clutch pedal interlock and alarm interlock are the two that come to mind, because those were my problem with my own swap.
The clutch pedal start interlock switch can be defeated with a squeeze on wiring splice tap.
The alarm interlock has two M-F connectors with large gauge red, or red/black, wires. Disconnect both, and plug the red wire from relay block 'F1' into the red/black one going to the starter. This will by-pass the alarm interlock.

 

[cbandy]

G60. It is from 98 vw jetta both are.. could this be relay related? The jumper around the security worked I now can start and throtttle engine and shutoff with key. Glow plugs are working. All I have is odometer and clock. Any ideas?

 

[cbandy]

Lug nut thanks that worked .. any ideas on the instruments?

 

[xtrigger]

im havin a similar problem with my swap... I get no tach, no speedo, no warning lights... but clock and km come up and it lights up

89 jetta swapped with mk3 99 tdi engine and harness... it starts well and runs very good... just no indications of anything...

any ideas?

im assuming same issue as OP

thanks

 

[cbandy]

I found my problem, The yellow,green,red,white,brown and black bridge boxes were not connected. I didn't think I needed them. But connect the smaller wires to the bridge and it came to life. The security system even functions correctly now. No jumper to make it start.