building a C3(747) to P4(730) adapter harness
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Joined: May 2010
Posts: 848
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From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
building a C3(747) to P4(730) adapter harness
Gents,
Per the title, just had a question before I mess something up. Took apart an old 165 that Ive had for 10years, salvaged the female connector. Had to cut the pins from the board. Looking for someone who has built one, mainly I need to know what was used(if any) to connect the wires to the pins in the female connector. Also, I may need new pins since the old ones are now shorter, where can I grab some new ones? Thanks!
Per the title, just had a question before I mess something up. Took apart an old 165 that Ive had for 10years, salvaged the female connector. Had to cut the pins from the board. Looking for someone who has built one, mainly I need to know what was used(if any) to connect the wires to the pins in the female connector. Also, I may need new pins since the old ones are now shorter, where can I grab some new ones? Thanks!
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: building a C3(747) to P4(730) adapter harness
You may be interested in this:
http://www.racetronix.biz/itemdesc.a...CA-001&eq=&Tp=
Makes it a lot easier.
As for the pins in the connector, not normally replaceable. To remove a connector from an ECM PCB, douse the top side with either acetone or green brakekleen. That will soften the conformal coating.
Hit the back side with a propane torch. Heat it quickly and evenly. Don't vaporize the solder!
The connector will then just pull off.
Solder the wires to the ends of the PCB side pins of the connector. Use heat shrink for best reliability.
RBob.
http://www.racetronix.biz/itemdesc.a...CA-001&eq=&Tp=
Makes it a lot easier.
As for the pins in the connector, not normally replaceable. To remove a connector from an ECM PCB, douse the top side with either acetone or green brakekleen. That will soften the conformal coating.
Hit the back side with a propane torch. Heat it quickly and evenly. Don't vaporize the solder!
The connector will then just pull off.
Solder the wires to the ends of the PCB side pins of the connector. Use heat shrink for best reliability.
RBob.
Thread Starter
Senior Member
Joined: May 2010
Posts: 848
Likes: 0
From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
Re: building a C3(747) to P4(730) adapter harness
You may be interested in this:
http://www.racetronix.biz/itemdesc.a...CA-001&eq=&Tp=
Makes it a lot easier.
As for the pins in the connector, not normally replaceable. To remove a connector from an ECM PCB, douse the top side with either acetone or green brakekleen. That will soften the conformal coating.
Hit the back side with a propane torch. Heat it quickly and evenly. Don't vaporize the solder!
The connector will then just pull off.
Solder the wires to the ends of the PCB side pins of the connector. Use heat shrink for best reliability.
RBob.
http://www.racetronix.biz/itemdesc.a...CA-001&eq=&Tp=
Makes it a lot easier.
As for the pins in the connector, not normally replaceable. To remove a connector from an ECM PCB, douse the top side with either acetone or green brakekleen. That will soften the conformal coating.
Hit the back side with a propane torch. Heat it quickly and evenly. Don't vaporize the solder!
The connector will then just pull off.
Solder the wires to the ends of the PCB side pins of the connector. Use heat shrink for best reliability.
RBob.
Thread Starter
Senior Member
Joined: May 2010
Posts: 848
Likes: 0
From: Alamogordo, NM
Car: '86 Grand National
Engine: LZ9????
Transmission: 2004R
Axle/Gears: 3.42
Re: building a C3(747) to P4(730) adapter harness
Ok Gents,
found a relatively easy solution to connect the wires to the pins. i had some 18-22 awg butt connectors laying around, took the plastic sheath off the connector and was able to crimp one end to the pin. connected the other end to the wire and then flattened the whole thing in the vise. tested it out in the connector and have plenty of clearance. going to flux/solder/shrink wrap each one for the warm fuzzies. pics when finished....
i have a home for almost all wires/circuits, except the injector grounds. according to the wiring diagrams ive referenced it looks like ill need to connect pin D6(730) to A12(730 system ground) and D7(730) to D1(730 system ground). looks like these are all tied together? do i need to bridge the grounds together, or can i keep them separate, or ground them to A12 or D7?
thanks!
found a relatively easy solution to connect the wires to the pins. i had some 18-22 awg butt connectors laying around, took the plastic sheath off the connector and was able to crimp one end to the pin. connected the other end to the wire and then flattened the whole thing in the vise. tested it out in the connector and have plenty of clearance. going to flux/solder/shrink wrap each one for the warm fuzzies. pics when finished....
i have a home for almost all wires/circuits, except the injector grounds. according to the wiring diagrams ive referenced it looks like ill need to connect pin D6(730) to A12(730 system ground) and D7(730) to D1(730 system ground). looks like these are all tied together? do i need to bridge the grounds together, or can i keep them separate, or ground them to A12 or D7?
thanks!
Joined: Jul 1999
Posts: 12,101
Likes: 127
From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Re: building a C3(747) to P4(730) adapter harness
You may be interested in this:
http://www.racetronix.biz/itemdesc.a...CA-001&eq=&Tp=
Makes it a lot easier.
http://www.racetronix.biz/itemdesc.a...CA-001&eq=&Tp=
Makes it a lot easier.
-- Joe
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