And now the Loom!

Discussion in 'Mech Tech' started by Mark Darby, Nov 15, 2019.

  1. This drawing is taking a huge amount of time. Luckily this is the bit I've most been looking forward to.
    It's a WIP:
    Day, snotty, Valveandy and 1 other person like this.
  2. You know VW have already drawn that up for you ;)?
    Razzyh, Day, Deefer66 and 1 other person like this.
  3. But only for an prototype. I don't like the new style diagrams so decided to draw my own with all the little extras I want, including a leisure battery circuit, USB chargers, electric washers, spot lights, electric fuel pump, fuel cut off solenoid, etc etc
    Last edited: Nov 15, 2019
    mikedjames and Day like this.
  4. Don’t forget central locking!
    Mark Darby and F_Pantos like this.
  5. I hope this exercise bears fruit.
    Mark Darby likes this.
  6. Loins!
    Deefer66 and Mark Darby like this.
  7. How you powering your fuel pump & cut off valve? I have used an ignition powered timer relay set for about 30 seconds and a second relay alternator triggered. Seems to work
    Deefer66 and Mark Darby like this.
  8. Remote of course and electric windows. Did you get around to fitting central locking to the slider? I was looking at it yesterday and thinking I must do it – then we had 20cm of snow and I’ve spent the day digging. Digging I said.
    Deefer66, Valveandy and Mark Darby like this.
  9. Slider would be nice but too much metal-chopping for me.
  10. For the contacts or the solenoid?
  11. For fitting the motor, from what I’ve seen on’t web. Need to chop bits out of the slider.
  12. I have version 1 of that, a very long wraparound chain and a padlock.
  13. Well worth doing on the cab doors!
    Mark Darby likes this.
  14. It will I promise. I did it this way for the buggy. I find it easier to start from scratch and custom build the loom. I use thin wall wire and up the specs. I stick to the original VW colour schemes for the wires and am even having the NLA colours made for me (same price, you just have to buy a 30m reel - I've got plenty of takers for the leftovers :)). I like having a diagram on the screen where it's easy to move wires and manipulate all the elements and I find it easier when looking at the loads on each circuit - as long as you know how much current each thing draws - to work out fuse ratings and wire thicknesses. I enjoy this bit of the resto the best.
    JamesLey and 77 Westy like this.
  15. I'll be honest, on the buggy the pump just comes on with the ignition. I find it handy that I can hear the note change when the float chambers are full - then I know to start it. The needle valves are new and do cut the flow. All my flexible pipes are new too. Is this a no-no?
    I've actually bought 2 solenoids as I intend to add one to the buggy too. I'd like to do it properly and if I need a relay will gladly add it. Please would you post a circuit diagram for me?
  16. I was going to use a fuel pump relay as used on a fuel injection vehicle. The problem being the timed priming pulse is only 1-2 seconds so not long enough to run the pump & fill the carbs before cranking.
    I figured a timer relay giving 30 secs or so priming time was plenty to get the engine running & charging to energise the run relay.
    Only issue I suppose if the alternator stopped charging the fuel pump would stop.
    However the charging light would come on as a warning giving you time to pull over.
    I have a small jumper lead made as a backup just in case.
    This is the timer relay. I will sketch you a quick wiring diagram.

  17. Quick wiring diagram :thumbsup:

    Mark Darby likes this.
  18. Getting it to operate the lock is a faff but there are ways to cut a hole in the slider for the motor without it looking like Devon had used a tin opener – and the hole is hidden by the door panel. The only visible hole is about 5mm dia just under the lock for the rod from the motor.

    By the way… I have one of these controlling the central locking

    Question - it only has one output for the indicators, how can I connect it to the VW wiring? I’ve been thinking of using a relay with dual but separate contacts but is there an easier or better way?
  19. You could use a couple of 5A blocking diodes.
    Ordered some from this seller last week & they arrived next day :thumbsup:

    77 Westy likes this.
  20. Thanks for that. Free delivery, same day dispatch, UK seller, but who is it?

Share This Page