That's right. If it goes short it allows power from the green on the brake
pressure failure circuits to energise the starter relay. The symptom is
that the starter starts cranking as soon as you turn on the ignition, or at
least, keeps cranking after the car has started, unless the handbrake is
off. The diode is on the RHS firewall and has one white/red on its negative
end and two green/oranges on its positive end.
----- Original Message -----
From: Tab Julius <email@example.com>
Sent: Friday, December 10, 1999 10:00 PM
Subject: Using handbrake starts engine?
> I found this NAMGBR technote and want to make sure I understand it
> "Also, in the 1977 - 1980 models, a failure of the brake warning light
> diode can allow the engine to start when the handbrake is pulled UP!"
> That is, the diode bites the dust, then one day you pull up the handbrake
> and the engine starts? Maybe the tales of Lucas aren't all that
> after all... Sheesh.
> - Tab
> '78 B
> Checking my diodes...