LS Gen 3 ECM Engine Computer Connector Kit Blue Green P59 PCM LS1 LM7 LQ4 L59

LS Gen 3 ECM Engine Computer Connector Kit Blue Green P59 PCM LS1 LM7 LQ4 L59

Marsoni

M251S

$103.95

Get it in 3 business days with 1 day shipping. Friday, May 29

LS Gen 3 ECM Engine Computer Connector Kit Blue Green P59 PCM LS1 LM7 LQ4 L59LS Gen 3 ECM Computer Connector Kit Blue Green Compatible with 2003 and newer GM LS Gen 3 series engines with two 80 terminal Blue Green connector Includes: 2 connectors, 2 Blue Retainers, 2 Green Retainers, and 100 ECM terminals OEM Delphi components Don't take a chance with cheap wire connectors, that use poor quality (wire, crimps, twisted bent unseated terminals) and have conductivity issues that will cause your engine to run poorly and be

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We offer a 30-day return/exchange service after receiving.
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So happy we got the wiring harness to go with the lights to make all the modes work! I love the different settings, the on/off and mode buttons the harness comes with is great, works well, looks nice installed. The harness is great quality, although for my 4 door Jeep we had to add about 6’ of wire onto the harness to make it reach to the rear bumper. Definitely recommend this for your multi- mode lights!

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Reviewed in the United States on June 1, 2021

Verified Purchase

Jacquie L

Pawtucket, US

★★★★★ 5

It’s easy plug and play but

Easily plug and play. Connectors were cheap but came with extras Incase they needed replaced. I installed on 2016 wrangler. But the switch is too short to have next to my driver side so I have yet to figure something out with that. It’s definitely a universal wiring harness that’s not throughly thought through.

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Reviewed in the United States on February 21, 2021

Verified Purchase

Shay C.

Whiting, US

★★★★★ 5

Mode switch pigtail a little large for firewall pass through

Harness works great, quick and easy to install, only issue I had was the mode switch pigtail was a little large to push into firewall pass through and it could use an additional 2’ to 3’ of wire on mode switch end

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Reviewed in the United States on November 2, 2022

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roys_fishing

Natrona Heights, US

★★★★★ 1

Poor quality switches

Main power switch didn’t work and since I didn’t get a chance to install when I ordered it, I can’t return it! Once again Amazon gets my money.

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Reviewed in the United States on November 28, 2025

Verified Purchase

Jeff krevsAmazon Customer