gauges smoking?!

[rdkonkel]

Just started and ran the 72 c20 with a 6.0 swap for the first time today.
When in the garage and running there was no smoke. But it would only be running for 10-20 seconds. This drive was a good 5-8 minutes.
Smelled a little plastic-like and when pulling back in to the garage and key off there was a little stream of smoke coming from the lowest gauge right of the column. Dont think I changed anything there unless i got a wire crossed on the cowl junction somehow.
Any one have the quick diagram for the engine side of that junction block?
Not the wiring diagram of the whole truck just a per pin explanation of what and where for the dozen or so wires