First off, like to say thanks to everyone that contributes the vast amount of great information on this forum. I recently did the DIY locker mod on my 05 Taco shown here. I'm not really savvy when it comes to working on my truck, but was able to successfully complete the mod after an hour worth of work. My issue is: whenever I activate the diff lock, something shorts out in the heat and/or A/C blower. I pulled the ECU fused after it happened the first time and that fixed the problem, until I went to use the locker again today. The same thing happened, heater stopped blowing air. Like I said, I'm not really knowledgeable on this stuff and would appreciate any advice or input on the issue.