1998 VW Polo mk4 Tach wire
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=76409
Printed Date: April 29, 2024 at 10:35 AM
Topic: 1998 VW Polo mk4 Tach wire
Posted By: mmh1
Subject: 1998 VW Polo mk4 Tach wire
Date Posted: April 18, 2006 at 6:02 AM
Hi,
I'm having trouble installing an Clifford Intellistart 4 to my VW Polo Mk 4 1998 with manual transmission.
Could anyone advise me of the colour of the Tach wire which is required for the engine starter.
This could be one that the UK installers could answer as it's a UK car.
Or will a Clifford RPM or Alternator sense module be required?
Many thanks, Mo
Replies:
Posted By: joe_1
Date Posted: April 18, 2006 at 3:22 PM
hi what is the engine that your car has, so i can give exact wire colour
-------------
i am also a technician so if you have any engine trouble let me know, and i will do my best to help.
Posted By: mmh1
Date Posted: April 18, 2006 at 3:45 PM
Hi Joe,
Thanks for your reply.
The Polo is a mk4 1998/9 model 1.6GL 5dr.
It has a 1.6 8v engine.
Thanks, Mo
Posted By: joe_1
Date Posted: April 18, 2006 at 4:17 PM
hi mo, the autodata that i got doesnt give the exact rpm wire at the instrument panel, but here are the wires that come from the ecu to the instruments,GREEN/ blue white blue/white and violet, if you cannot get a tach signal from the instrument panel, then you can get the same signal from one of the fuel injectors, injector 1 wire colour is green, and can be found at pin 7 on the ecu, it is on the right hand side of the ecu harness and it is the top row,
-------------
i am also a technician so if you have any engine trouble let me know, and i will do my best to help.
Posted By: mmh1
Date Posted: April 18, 2006 at 4:31 PM
joe_1] wrote:
i mo, the autodata that i got doesnt give the exact rpm wire at the instrument panel, but here are the wires that come from the ecu to the instruments,GREEN/ blue white blue/white and violet, if you cannot get a tach signal from the instrument panel, then you can get the same signal from one of the fuel injectors, injector 1 wire colour is green, and can be found at pin 7 on the ecu, it is on the right hand side of the ecu harness and it is the top row,
Hi Joe, Thanks for getting back to me so quickly. I was just hoping to connect to a negative coming from the coil, I'm only used to cylinder type coils like on my old Mini to get a tach signal. The Polo has a different type of coil and some type of ignition amplifier and I'm not familiar with that. Connecting to the ECU worries me and this is the 1st install I'm doing regarding remote start. I have installed a couple of alarms before: a Selca and a Microscan so have a little bit of knowledge, but I'm no expert. Where would you say would be the safest point to connect to to get an accurate rpm signal for the remote intellistart and blackjaxx? Would it be a good idea to use a diode in the sensing wire from the alarm so that only a signal can flow from the rpm source to the alarm and not the other way just as a precaution so as not to fry the ECU? Many thanks, Mo
Posted By: joe_1
Date Posted: April 20, 2006 at 12:11 PM
does the ign coil have 4 wires going to it on the multi? or does it just have 2 wires going to the coil. set your multi meter to ac and test the coil for a fluctuating signal when the engine revs change, this wire should read a steady neg with the ign just on ------------- i am also a technician so if you have any engine trouble let me know, and i will do my best to help.
Posted By: mmh1
Date Posted: April 25, 2006 at 1:54 PM
joe_1] wrote:
P>does the ign coil have 4 wires going to it on the multi? or does it just have 2 wires going to the coil.set your multi meter to ac and test the coil for a fluctuating signal when the engine revs change, this wire should read a steady neg with the ign just on
Hi Joe, sorry for the delay replying. It has 2 wires coming into the coil from the ignition amplifier and 1 connection from the coil to the distributor. Thanks, Mo
Posted By: joe_1
Date Posted: April 25, 2006 at 1:59 PM
hi, connect it to the one connecting to the coil and distributor.
-------------
i am also a technician so if you have any engine trouble let me know, and i will do my best to help.
Posted By: mmh1
Date Posted: April 25, 2006 at 3:11 PM
joe_1] wrote:
i, connect it to the one connecting to the coil and distributor.
I think that's the main HT lead from the ignition coil to the centre of the dizzy. (Haynes manual) Is that still suitable? got me thinking due to the possible high voltages involved. Mo
Posted By: joe_1
Date Posted: April 25, 2006 at 3:18 PM
i think you have to connect it direct to the wire, as you will not beable to do this to the high tension wire beacuse you cannot link into that, just hook it into the pulse wire from the coil to the cap ------------- i am also a technician so if you have any engine trouble let me know, and i will do my best to help.
Posted By: mmh1
Date Posted: April 25, 2006 at 3:25 PM
joe_1] wrote:
P>i think you have to connect it direct to the wire, as you will not beable to do this to the high tension wire beacuse you cannot link into that, just hook it into the pulse wire from the coil to the cap
Sorry Joe, I'm getting a bit confused (I'm a novice to mechanics). Are you saying just connect to the main HT lead coming from coil to the centre of the distributor cap? or some other wire Mo
Posted By: joe_1
Date Posted: April 26, 2006 at 12:37 PM
you will not beable to connect to the main silicone ht lead, it will be the neg wire on the coil, this is the trigger pulse wire that turns the coil on and off, get your connection there.
-------------
i am also a technician so if you have any engine trouble let me know, and i will do my best to help.
Posted By: mmh1
Date Posted: May 01, 2006 at 2:51 PM
Thanks for all the info Joe.
Mo
|