2003 JEEP WRANGLER TJ  - Advance Adapters Rubicrawler Computer Module - 42R800 - 42R800 | 4WD.com
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2003 JEEP WRANGLER TJ  - Advance Adapters Rubicrawler Computer Module - 42R800 - 42R800

Advance Adapters Rubicrawler Computer Module - 42R800



This Electronic Control Module will interface with your vehicles factory computer to tell it that you are in low range and to keep the differentials locked and sway bar disconnected while in use. The vehicle will need to know that the gearing is changed to not throw any trouble codes.


Question & Answers

1 Answered question

Will the Transfercase need to be removed in order to be able to get at the wire's to install this Module? The Direction's arn't that clear, but start off with the saying something about the T-case being removed for ease of installation. Please clarify.. Thank You.

Asked by Bootlover from Mpls. MN on

Hello Bootlover, You do not have to take the transfer case out to install this Module. They just say in the instructions if you have it out and you are installing the Rub Crawler you can install the Module at the same time while it's out. Would be much easier to do if it was out but not necessary. Thank you!!!

Answered by Bob H from Mpls. MN on


Advance Adapters got its start in Downey, California in 1971 with a single adapter mating a Muncie car 4-speed to a Jeep Dana 18 transfer case. Eventually headers, overdrives, motor mounts and linkage brackets were added to the offerings to complement their core adapter components. When interest in rock crawling spiked in the mid-1990s, Advance Adapters offered low ratio transmission swaps then switched gears into the ultra-low gear transfer case arena. Today, the company is based in Paso Robles, California and their engine and transmission conversions for Jeeps are in kit form and sold as individual components. Shop Advance Adapters Now