Well not sure if this is considered an upgrade but it is useful to have a standalone glowplug wiring harness when converting any mk1/mk2/mk3 vw. I took a vw fan relay holder, drilled it out and attached the correct terminals and wires. You can find the glow plug wiring schematic online. Here are a few pictures.
If anyone is interested in a tutorial for the stand alone glowplug harness I can write one up.
I think a simple fuse block from Radio shack is the better option to this problem. Individually fused lines and a solid mounting method.
For a no-effort version, the '82 Vanagon Diesel standalone glow plug relay holder is still available new from VW. It even includes the fusible link mount as well.
For a no-effort version, the '82 Vanagon Diesel standalone glow plug relay holder is still available new from VW. It even includes the fusible link mount as well.
From what I found I think it is part number 281 937 505 a
You would need the 109 Relay and related circuits as well as the Glow-Plug Relay
Forgive my ignorance but what is the 109 relay? For the past 2 glow plug harnesses I have made I only included the MK2 glow plug relay and the appropriate connectors.