Anyone who has done this, can you offer any advice? Vehicle is 20+ years old. Many ends have been cut, others are brittle and cracked, so there is just the bare basics. But no radio, defroster blower. Some online offer a wiring harness for $ 250, but no connectors. A brand new one from Chevy with connectors is $ 550. As my Blazer is a hybrid, one local electrical shop sid I could spend $ 2,000 before I am done. I am on a budget.