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A4LD to fm132 swap


ty.forestcom

Forum Member

Joined
May 27, 2025
Messages
23
Points
101
City
USA
Vehicle Year
1988
Transmission
Manual
Good evening everyone, thank you in advance for any help given.


I have a 1988 ranger 2.9 with an A4LD. I recently picked up an fm132 for next to nothing. A 1990 ranger also with a 2.9. Looked for 6 months to find a m5 but eventually caved in to the Mitsubishi. I am preparing to install the transmission and pulled the 2 connections coming from the fm132. I’m guessing one is a reverse switch and the other I’m not sure. It had 2 connections near the front of the doner truck leading to the wiring harness. My 1988 doesn’t seem to have them. I traced the 3 wires to a large connection but there is only one female connector they go into.

I would like to know what both the connectors on the trans are for and whether I NEED the second one or not. I know I need reverse and assume the unknown one is mandatory. If both are mandatory, how should I go about connecting the harness to my 88? Sorry if I am not using the correct terminology, I’m 17 and learn every day but haven’t had much experience with electrical.


I rebuilt my automatic and it was pretty straightforward with my ATSG service manual. No electrical problems obviously. Now I’m stumped. If anyone knows what I should do with a freshly and entirely rebuilt A4LD with a trans-go shift kit, I’d like to hear some ideas as well!


Any help is greatly appreciated. Thank you so much! -T
 
The other one is the neutral sensor, probably similar wires to the park/neutral start circuit on an auto rig. None of my stuff has the neutral sensor so I'm not sure how it works but I know it's a thing, well my '90 does have that on the transmission but not on the vehicle...
 
Thank you, I read on another forum it’s easily bypassed by splicing the 2 wires together! My NSS won’t plug into the manual trans so I’ll have to go that route. Any suggestions on the reverse?
 

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