At 09:29 AM 7/29/2013, kenneth wilford (Van-Again) wrote:
>I actually made this video a while back.  It is very helpful if you have
>never had to mess with your brake master cylinder or instrument cluster.

Ken, on your fan resistor video you say that the only lead you have
to worry about matching when installing the plug is the one at the
far end, which would be the mid-element tap.  According to the
numbers Mark has provided this is not the case, as the two sides
actually have a resistance ratio of 3:1 and would provide noticeably
different results if connected backwards.  Can you revisit that issue?

Incidentally a handy way of checking low resistances like this would
be to connect the resistor to an AA/C/D cell or to 12 volts, in
either case using an incandescent taillight lamp in series as a
current limiter.  If you want an actual value in ohms you'd also put
an ammeter in series but for comparative measurements you don't need
it.  Either way, use your digital voltmeter to show voltage dropped
across each resistor segment.  The resistance will be in proportion
to the voltage found.

A regular five-watt taillight lamp (not stoplight) has a resistance
cold of around three ohms, so that will cut the current down to
something an AA cell can handle easily.

Yours,
David