A few things.
- The Viper was an alarm.
- They sell cloth wiring harness tape that doesn't leave sticky residue like electrical tape. https://lmr.com/item/LRS-TA31/Cloth-Wiring-Harness-Tape-Adhesive
- If your heater core is suspect, now's the time to check/replace it.
- Plugs/connectors can be replaced easier than you might think. Determine which ones are missing and go from there.
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