When you turn the ignition on the brake warning light turns on as a bulb
check. It will turn off when the oil pressure switch is satisfied.

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
neil N
Sent: Thursday, August 07, 2008 4:58 PM
To: vanagon@GERRY.VANAGON.COM
Subject: "Brake Warning Light" grounding question. (searched)

Hi all.

This for an '81 Westy.

Bentley shows a transistor symbol ("solid state circuitry") in the
brake warning light assembly. It appears to work with the brake light
switches on the master cylinder to warn of a failure of a brake
hydrualic circuit.

This transistor has 2 grounds. A ground goes to one side from the oil
pressure light (when pressure switch closed), the other side has a
constant ground from the body.

Why is there a ground from the oil pressure switch wire?

I appreciate any insights. It will help me trouble shoot my Jetta
engine install.

Thanks,

Neil.

--
Neil Nicholson '81 JettaWesty "Jaco
http://groups.google.com/group/vanagons-with-vw-inline-4-cylinder-gas-engi
nes
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