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wiring_in_an_electronic_speedo_incorporating_ax_clocks_ax_wiring [2016/08/18 20:27] (current)
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 +===== Wiring an Electronic Speedo =====
 +
 +
 +I was using forte dials from a 96 car so they had electric speedo drive, my car had cable drive from factory. ​
 +
 +I know for a fact there are different numbers of teeth on different gearboxes and then again on different speedo pickups so if you just wack an electric drive pickup in an originally cable driven box it can cause probs with accuracy of speedo. ​
 +
 +I am running a saxo VTS gearbox and the pickup came with it. 
 +
 +If your box does not have the electronic pick up then fit the electronic pickup to the gearbox - mounted on the back of the box halfway down on top of the diff housing. ​
 +
 +Now you will need the 3 pin plug to plug into it too, this may be on your engine loom if you have a modern GTi engine loom or a saxo/106 1996 or newer loom and engine. In this case you already have power and signal wiring. ​
 +
 +If not then pin 1 is 12v, pin2 is earth, pin 3 is signal. Wire one up to switched live, 2 up to earth and 3 will need a wire running into the dash loom, if your loom already has a speedo drive output then wire that into the dash loom instead of cutting the wiring to pin 3.  It is pin 5 or 6, one is revs one is speedo. ​
 +
 +Cable tie the wires out of the way, or feed it into the loom tubing. ​
 +
 +Now you need to bring the wiring up to behind the clocks, try and keep it tidy by wrapping it round or cable tieing it to the loom. 
 +
 +Now you have it by the back of the clocks, you should have the clocks out by this point and hence the steering wheel off and stalk controls out too. unplug the wiring from clocks. ​
 +
 +Look on the back of the dials at the plastic cover over the speedo module. There is a tiny plug on it with 3 wires, trace the wiring back from there across the circuit, one goes to + on the circuit, one goes to minus and the other goes right round the board and then inside and connects to a pin where the loom connects. For me this pin was brown connector pin 4, it was blank on the connector so i wacked the wire in there then plug in.
 +
 +You should now have a working electric speedo, and no wobbling speedo needle. ​
 +
  
wiring_in_an_electronic_speedo_incorporating_ax_clocks_ax_wiring.txt ยท Last modified: 2016/08/18 20:27 (external edit)