85/86/87 T1 To 87 T2 Wiring *MAKE STICKY*

[glhsken]

You just add the wires... Did it to my 87 SC

[NJMarc]

Thanks Ken!

GLHS Electronics it is for now, since I'm lazy

[tmef]

I just did this conversion last week. I did it just as stretch described in an earlier post, went to minimopar and printed out both the GLHS and Daytona logic module pinouts and made note of the differences. I was fortunate enough to have bought the wiring overlays from Cindy for the oxygen sensor, charge sensor and the AIS/TPS. So those were very easy. The MAP sensor I did very easily too. Since the new setup doesn't use an EGR valve, the old EGR solenoid signal wire (#6 blue connector) became the MAP signal wire (#19 blue connector). Just cut the old wire at the plug right before the EGR solenoid, then soldered it to the DG/RD* wire on the MAP plug and then just move the pin from the blue #6 to the blue #19 hole. Then, for the MAP power supply (#1 red plug) I used an unused wire, (OR/LG* in red plug, #4 cavity). That runs to the main firewall plug cavity #9. I cut the wire before the firewall plug and pulled it back through the wire bundle, routed it over to the MAP sensor and soldered it to the VT/WT*. Then put that wire in the #1 cavity of the red plug. For the sensor signal ground wire, I spliced the MAP's BK/LB* to the charge sensor's BK/LB*. Done.

[shelbyvnt2]

Originally posted by Ken Adler

Quote:

The only wires you need to add are the additional wires for the ais. Your 86 LM is the same as a glhs.

Ken,
Does this mean that a MP logic module for a T1 86 SC would be the same as a GLHS computer? I could switch to a blow through setup and only add the 2 AIS wires to the computer and run the T1 MP logic module without an intercooler for a little while while I gather the Intercooler parts?

I am just trying to make sure I understand the differences between T1 and GLHS. Any info appreciated.
Pat

[tmef]

Hey Pat,
If cavity #16 and #20 on the red plug are wired internally, then yes it is ready to go.

[glhsken]

Pat, yes.. like TMEF said.. My duaghters car is set-up but not intercooled (don't want to give her the ponies)

[Garret]

just so you guys know, IF ANYONE is worried about this swap don't be, cause I managed to do it and I usually manage somehow to mess stuff up and I didn't do anything that wasn't unfixable on mine... although I did manage to wire up the map wrong but that was it, it's super easy and just sounds complex the hardest part about the swap was running the wires into the car thru the fire wall

[glhsken]

Quote:

Does this mean that a MP logic module for a T1 86 SC would be the same as a GLHS computer?...

No... Just read this closer... the actual logic in the cals is different. GLHS cals and SC cals share the same pinouts and wiring, that is all.

[NJMarc]

Regarding the Air Charge Temp Sensor - will the plug on my 85 Log Intake harness plug into the T2 style sensor? I'm sure I have to re-pin it, but I'm just wondering if the plug itself fits. And just a FYI - according to those charts on minimopar - 86 T1, 86/7 GLHS, and 87 TII, all have the Air Charge Temp on the same pinout on the Logic Module.

[shelbyvnt2]

Originally posted by Ken Adler

Quote:

No... Just read this closer... the actual logic in the cals is different. GLHS cals and SC cals share the same pinouts and wiring, that is all.

Ken,
The logic is only different because of the T1 vs. T2 is that correct? The actual operation of the AIS motor and TPS is the same isn't it? I guess what I am trying to say is: If I am wired for the newer AIS I can run the T1 cal with a blow through setup and only add two wires. The actual operation of the logic module will allow this?
Pat

[Garret]

Quote:

Originally posted by NJMarc Regarding the Air Charge Temp Sensor - will the plug on my 85 Log Intake harness plug into the T2 style sensor? I'm sure I have to re-pin it, but I'm just wondering if the plug itself fits. And just a FYI - according to those charts on minimopar - 86 T1, 86/7 GLHS, and 87 TII, all have the Air Charge Temp on the same pinout on the Logic Module.

the plug and sensor are the same

[glhsken]

Quote:

Originally posted by shelbyvnt2 Originally posted by Ken Adler Ken, The logic is only different because of the T1 vs. T2 is that correct? The actual operation of the AIS motor and TPS is the same isn't it? I guess what I am trying to say is: If I am wired for the newer AIS I can run the T1 cal with a blow through setup and only add two wires. The actual operation of the logic module will allow this? Pat

Unfortunately, that's beyond what I've tried.. I had GLHS modules lying around so I swapped them in.

No Idea if the 86 T1 module will work with the new set-up. I do know the 86 modules are pinned to handle it... Not sure if the logic is there though.

[shelbyvnt2]

Ken,
Thanks for all the info.
Pat

[Klaus10]

The 85 and 86 LM are different and are not interchagable. You can swap a 85 LM into an 86 and it will run in limp mode. The sync pick up is different necessitating a few addtional wire swaps in the connectors.

The 86 and 87 LM are essentially interchangeable but the 87 LM has more memory and adapts the boost ramp up better than the 86. The 86 has 2 memory cells and the 87 has I think 5. Anyway the EEPROM in the 85 and 86 are 2764 and the 87 is 27128.

[glhsken]

You need to change the distributer and HEP to an 86/7 model and it (the 85) will work fine.