help with the electrical connection of the VDO clocks

[deQuincey]

hi

i am trying to install 4 clocks to have a fresh information of key parameters from the engine behaviour (volt. oil temp, oil press, water temp)

so i bought VDO gauges and instruments and i am trying to install the hardware part, and the electrical conection too

all the sensors are always connected to minus-ground by their installation thread, and then there is a free conection faston spade that goes to the clock instrument

the clocks came with a 8 pin connector and two possibilities of connection ways:

- warning contact minus ???
- warning contact plus ???

1st question: how can i decide one of these two choices ? and why ?

2nd question: pin n.5 says: sensor, so, ok that will be a cable from the spade faston in the sensor, right?

but then comes pin n.3 saying sensor minus, and what can i do ?, i do not have any other spade in the sensor, so what am i supposed to connect there ???

by the way, the identification of the pins for the case "warning contact minus" are :

pin n.1 plus connected ignition
pin n.2 ground (minus)
pin n.3 sensor minus ???
pin n.4 free
pin n.5 sensor
pin n.6 lighting (may i assume this is a plus (positive) ???)
pin n.7 warning led (ground) minus
pin n.8 plus connected ignition

please help !
-

last question: the voltmeter should be connected to a positive to meassure the power of the electric installation, but where to pinch ? in the positive pole of the battery, or in other positive point ?:
i.e. alternator ?, rectificator ? regulator ?

thanks for your patience

regards

 

[61porsche]

VDO Guage help

Try this website; http://www.egauges.com/Inst_PDF.asp#InstrumentKits

They have wiring diagrams for each guage. ( You refer to clock)

I can't tell from your earlier post which guages of which specific type you intend to install. So if you can clarify that by guage, face( reading), and sender it would help a bit.

Each guage should have a light or lights. The grounds are usually just for that; but again it depends on the type of guage and sender. So, if you seperate the function from the lighting, it gets a little easier.

Tip- there are electrical "taps" that both clamp and tap for the new connection; what I mean by that is that you don't have to cut and splice, keeping the original wiring in tact.( some even with fuses!)

 

[deQuincey]

thanks jerry

yes those drawings for old vdo gauges were interesting, i can follow the explanations,... but nothing to do with the new 8-pin system, they were much simpler

now the 8-pin system permits more complex connections and that is my problem, when a lot of choices are in front of you, it is difficult to get the simple solution

anyway thanks for the link and i try to check it again, and clarify my ideas

regards