OEM MK4 management wiring => Mk1/2/3 harness install FAQ (Now with added dieselness!)

Hi guys, i have one question

i make now wiring AGU '00 in Cabby from '92 CE1. Should i wiring pump relay with relay in original place or separate? What is best solution?

 

I got my swap running and drive it after 8 years! I am having a couple electrical issues though. Perhaps I could get some insight. Speedometer doesn't work, tach is still reading 3k at idle, odometer doesn't count up. I'm suspecting the vss in my trans may be gone? I wonder, I have lengthened my wires going to the engine and fuse box, I remember the G1/12 going to the tach is a bit longer than the majority of the other wires. Would that be mucking with the signal coming from the ECU?

 

MK2 Golf with a Mk3 jetta TDI cluster (just sent it off to a fellow who re-soldered all of the joints and set the odometer back to 0), ALH motor, wiring harness is from a 2003, with a CTN transmission from a b4 passat. I will check out G1/5, but I am 99.9% sure I have a 14 gauge wire running from the back of the head to G1/5 and the fuel gauge works, although it does take a while to get with the program and get an accurate reading. I assume you mean VSS on top of the transmission when you are referring to the Sender Plug?

To be clear, you are referring to G22 here

 

Thank you sir, I will check those things out, actually for the ALH the tach signal comes from pin 27 on the ECU https://forums.tdiclub.com/index.php?threads/tach-reading-from-alh-in-another-vehicle.376614/

 

Oh yeah my apologies, I did not think to divulge that information. Thanks for the tips, looks like Ill have a lot more wiring fun in the future "eye roll." The Odometer counter also works off of the G22 censor right? Or is that something else?

 

Superb guide! So very close on mine now. 89 Corrado 16v with AUQ. Connected everything, but as soon as the ignition is turned on, the injectors sit there clicking constantly.

my fuel pump isn’t priming, but after a quick test, I have 12v at the pump, so the pump has packed up (weird because it was completely fine in Feb!). But looking at my multimeter it appears that I have 12v at the pump constantly.

so leads me to think that the ECU somehow thinks the engine is running already when the ignition is tuned on, hence why I have a permanent 12v at the pump & injectors immediately start trying to work.

Anybody had this before?

 

Do you think that would be causing the injectors to be running constantly without engine running though?

 

you simply are amazing!! It was indeed the ECU earth! I’d forgotten to connect it

she started up straight away and run lovely!! So everything else is right. All done from this post. Thank you for your reply, without it I’d have bought a fuel pump!!!!

 

Alright, I tightened the VSS on top of the transmission. One thing I notice, at initial key-on, the tach jumps, indicating an initial electrical signal. However, the speedo needle doesn't jump like the tach. So perhaps a bad VSS.

 

Johnny,

I noticed in the first page for the VSS output with CE2 that you say that the vss signal feeds from G22 to W/01 this diagram says otherwise, can you please elaborate?

http://www.haywood-sullivan.com/vanagon/TDI/1996_Jetta_TDI_wiring_LONG4.pdf

 

Hey, if I using mk3 fuel pump my need some mod that I can see fuel level on mk2 cluster, or what? I'm using mk3 tank with mk3 vr6 fuel pump and full mk3 loom from tank to fusebox. I measure witht tester before fusebox, then I lift fueal sender up and down ohm is change, so fueal sender ant loom drom tank is working good. I try two differents cluster, but fuel level not working. In fusboxFAQ I see, that U1/12 is wire for fuel level sensor, so how I can testing ohm behind fusebox ?