Hi, thanks for the replies.

The Relay/Wiring harness are the exact ones pictured in your post Diesel911, with no visible fuse on the relay. Does this relay have a Reed Switch that you mentioned? There is also no fuse on the firewall, or wire coming off of Glow plug 4 that on the older setups seemed to lead to a strip fuse.

I followed the wiring harness from the relay all the way until the four wires dissappeared under the dash, no fuse in-line as well. Now I couldn't see the last 4-6 inches of these wires under the dash, without taking some of the dash apart, but I would guess there isn't one under there, as it it would be really difficult to change.