I am tired of struggling with pins in the connector, burning my knuckles on a hot engine, etc etc.
I worry repeated back-probing will damage the connector eventually.
I contacted Casper's and they offer the breakout harness as part of their catalog:
http://www.casperselectronics.com/store2/product_info.php?products_id=1621
This will make monitoring the TPS a LOT easier, which means I will be willing to do it more often. Kind of like having the right tools to grease the rear u-joints!
UPDATE:
This thing is really great. I had been fiddling around with the TPS and getting nowhere. The pin method was iffy at best. I couldn't get a smooth idle, even after doing valves, tightening up all boots, hoses etc etc.
With the breakout harness, I was able to easily hook up a multimeter and adjust the TPS EXACTLY at 150 mv when disconnected and closed. Then I screwed in the LH idle till it read 475 mv EXACTLY (to match my "modified stock" map per Todd @ Guzzitech).
Hit the starter and BAM, smooth idle. Now it runs like it should.
I never thought that ultra tiny variations in millivolts would make such a big difference. They do. With this harness you can get it really right.
If you have fallen down a rabbit hole of TPS, idle, and running issues, get the TPS right first using this harness.
P.S. While fiddling around, remove the headlight relay to save the battery. Don't ask.