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Making a harness extender for easy chip swapping.

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Old Jul 9, 2007 | 06:33 AM
  #1  
CJMurray's Avatar
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From: MA
Car: 93 Jeep Wrangler
Engine: 350 tbi
Transmission: 700r4
Axle/Gears: Stock 4.10's
Making a harness extender for easy chip swapping.

I am looking for suggestions or a parts list to make a harness extension so that I can relocate my ebl temporarily for easy access. I work a lot of hours and don't really have access to a good junk yard to start hacking up existing harnesses and computers. Does anyone make something like this or know where I can get the correct connectors and pins? I am sure some of you have already done this. Thanks
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Old Jul 10, 2007 | 03:56 PM
  #2  
CJMurray's Avatar
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Junior Member
 
Joined: Feb 2007
Posts: 32
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From: MA
Car: 93 Jeep Wrangler
Engine: 350 tbi
Transmission: 700r4
Axle/Gears: Stock 4.10's
Re: Making a harness extender for easy chip swapping.

OK, I talked to the guy at rosesandwrenches.com and he basically told me that all he can provide is the female connectors and pins, and I would have to desolder a couple make connectors from an old ecu. Has anyone done this before? Do the connectors on the ECU have enough room to solder or crimp on some extra wiring, or am I just asking for a big headache with all these extra connectors in a row? I'm sure someone else out there has done this. Thanks for your help.
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Old Jul 10, 2007 | 05:18 PM
  #3  
RBob's Avatar
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Making a harness extender for easy chip swapping.

The ECM side connectors have about 3/16 to 1/4" of free lead length. They seem to be tin plated brass. To get a good solid reliable connection an activated rosin flux helps. This is the typical electronics flux (not the plumbing stuff).

The trick is to get a good flow of solder around the connector pin and the wire. This is for mechanical strength. It is a lap joint where the wire is in line with and over-laps the pin. Then having heat shrink over it for some stress relief. Currently the '92 has an adaptor harness to go from the three '7730 connectors to the EBL ECM connectors. It has been holding up fine for about a year now.

RBob.
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