Upgrade your Stage 3/4 professional / pinout harness to a plug and play harness with this upgrade kit. Includes four plug and play subconnectors and reuses your JB3/4 pinout harness.
IN STOCK!! and ready to ship!
We will send you a brand new harness and once you send back the old JB3 harness we will refund the 120.00 core charge.
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