Hello I have 3 plug under the expansion tank. What are those? The white one i guess front fog light, im already on it to make a loom for it. Subject is a 1990 G2 GTI, but im not sure that is a correct plug type for CE2 lighting harness.
The colours visible, Black with white trace and Black with green trace, suggest they're for the side repeater indicators. Check if those two wires show a pulsating 12v when the indicators are used. White with Yellow trace is indeed for front fog lamps.
Thanks Dougie and RJ. One more question. I wired my ce1 digifiz in ce2 system based on your wiring infos jonny and my problem is the cluster "starting" on every 4-5th ignition turn. Is that perhaps a grund problem or can be cluster issue?
No, the complete cluster, backlight, blocks, everything. Just the battery light what i have fix everytime.
if everything dies I would be looking at the earths yep. one of them goes to the side of the head thats where I would start, its the brown/white wire with ring terminal
Some update, more confusion. I checked all grounding points, seems everything fine. Then i unplugged all the connector what involved with digifiz and if G1 not connected the cluster on every ignition light up (backlight) but not showing numbers, mileage etc. But if G1 connected then most of the time digi doing nothing. I removed one by one the terminals and G1/5 what cause the issue, but i dont know how to fix it, because with or without it the cluster not function properly. Ps I have ABF
hmm. I'd go thru all the pins double check all is well WL/T7 1 - wht/grn - 5 pin black plug -> K/12 or P/3 (rear screen heater warning) 2 - blk/wht - 5 pin black plug -> K/1 or A1/2 or H2/6 (left indicator warning) 3 - gry - U2/10 (handbrake & brake fluid warning) 4 - brn - U1/10 (earth) 5 - gry/yel - 2 pin blue plug -> time adjust buttons 4/min (minute adjust button) 6 - gry/blk - U2/14 (MFA stalk memory reset) 7 - wht/blu - 2 pin red plug OR U2/2 & U1/11 with speed sensor wired to G1/11 (speed sensor & VSS output) WK/T7 1 - gry/wht - 5 pin black plug -> K/10 or P/6 (rear fog warning) 2 - blu/wht - U2/7 (main beam warning) 3 - blk/grn - 5 pin black plug -> K/7 or A2/4 or H2/4 (right indicator warning) 4 - blu - U2/12 (battery warning light) 5 - red/wht - U2/4 (MFA stalk mode select) 6 - gry/red - 2 pin blue plug -> time adjust buttons 6/h (hour adjust button) 7 - grn - 2 pin red plug OR U1/6 with rev counter wired to G1/12 (rev counter, needs to be fed from MK3/4 ecu or TCI pin 7) SL/T9 1 - pur/blk - U1/12 (fuel level) 2 - grn/blk - U1/1 (oil temp) 5 - yel - U1/3 (1.8 bar oil pressure switch) 6 - gry/blu - U1/14 (dash illumination) 7 - blk - U1/4 (ignition live) 8 - blu/yel - U2/8 (MFA stalk memory select) 9 - wht/yel - 1 pin black plug -> P/1 or A2/8 (front fog warning) SK/T9 1 - wht/red - U1/2 (outside temp) 2 - yel/red - U2/9 OR U1/11 with coolant temp sensor wired to G1/11 (coolant temp) 3 - blu/blk - U1/5 (0.3 bar oil pressure switch) 4 - red - U2/11 (permanent live) 5 - brn/wht - U2/13 and U1/7 (MFA stalk earth) 8 - yel/blu - wired direct to coolant level warning control relay OR U2/9 with level warning wired to C/6 9 - gry/grn - 5 pin black plug -> K/5 or R/7 (lights on warning) ***** Notes on coolant level warning relay: factory digifiz need a 42 or 43 relay for the coolant level warning to work. oem it was fitted to the fusebox with funky re-wiring of the dash temp and speedometer pins, or you can wire the relay above the fusebox like so: 8/G - Digifiz SK/T9 pin 8 6/15 - ignition live 2/S - level sensor blue/red 4/31 - earth Then for level sensor leave the brn/red earth pin to C/5 or earth it, move the blu/red from C/8 to relay pin 2/S
Yes, thanks, i used your guide to wiring it up. I double check tomorrow. On ABF G1/4 is - blk - ignition coil pin 3 (4cyl, pre-96 6cyl), ignition coil pin 5 (post-96 6cyl), vehicle speed sensor pin 1, ECU pin 38 (pre-96 6cyl). Should i splice the existing black wire or replace it with my speed sensor (vss) wire pin 1? Because my guess is the vss or coolant relay causing the truble if i dont find anything tomorrow.
if the abf wiring is relatively standard the black wire for speedometer should be tapped into the coil wire some way along, then it goes thru the T28 round plug then off to speedometer. if during the conversion that was removed just tap it in again somewhere. I wouldnt have thought that would cause the digifiz issues though and neither would the relay, even with the wiring for those completely missing it should power up no problem
Updates for today Now im pretty sure have minimum 2 issue. 1. When K harness (rear wiring h) not plugged in cluster booting everytime, so i check the rear end tomorrow. 2. I guess have some capacitator issue also, because on the first ignition i have to wait 30-50 sec before the digifiz booting up. After that on every ign. on/off starting properly. But if i let the cluster ign off couple minutes, then i try again it takes again 30-60 sec to booting. Sounds capacitator, right?
yeah does seem to be a cluster fault if you've double checked all the live, ignition and earth pins are good...
Maybe i should try to wire it to a bench power supply and if it starting everytime right away then 100% loom issue
I have checked the Digifiz PCB. The most common faulty resistors are already replaced, but if the source photo is correct the order is wrong. Is it ok, or can cause my issues? My PCB. 6802 SMD resistor on the left, 104 SMD resistor right.
