Looking for high quality wire and connector brands.

Deutsch bulkhead and backing plate from Maven.

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That is exactly what I want to do with my car because I really like being able to take off all the wiring as one piece because I break stuff all the time. Also; https://www.waytekwire.com/ is great! We were paying 200$ for 300ft of GXL wire and Waytek has 500ft of SXL for 30$.