[Vwdiesel] Glow plug indicator

[cosborn at epix.net]

Hello all,  my 81 pu truck has a glow plug problem.  Recently the glow plug indicator light on the instrument cluster would start to flicker while driving.  The relay would "chatter" while the light was flickering.  After two days of this, the glow plugs stopped working.  I thought it was probably just a bad relay.  I got a new relay plugged it in and the glow plugs started working again.  I started the truck and took it out on a test drive.  The indicator started flickering again with the new relay.  Anyone have an idea about what may be causing this?
Thanks, Craig.

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