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1G Need help with missing reverse switch wiring

thakingcb7

Proven Member
198
6
Feb 8, 2015
Lewistown, Pennsylvania
Need help locating my reverse switch harness. I have the switch in the transmission but the plug and wires are completely missing. I'm about 2 month past inspection so I really need to get those sorted out. If someone could trace their harness to figure out where the wiring goes and should be that would be very helpful.
 

19Eclipse90

DSM Wiseman
4,901
699
Sep 29, 2003
OKC, Oklahoma
Based on your previous posts, I'm assuming this is for a 1G. The wires for the reverse switch come from the same part of the harness as the wires for the starter. The whole starter wire harness connects to the rest of the engine control harness with a 4-pin square connector (for manual transmissions): The 1990 Engine Control Wiring Harness
 

thakingcb7

Proven Member
198
6
Feb 8, 2015
Lewistown, Pennsylvania
Definitely for a 1g. I've tried locating the wires for months now. Figured I'd find something while swapping the transmission but nothing. I at least have a place to start looking now. Thank you.
 

19Eclipse90

DSM Wiseman
4,901
699
Sep 29, 2003
OKC, Oklahoma
Here's the whole starter harness. It shouldn't be that difficult to track it all down from there. As I linked previously, A-10 is the connection to the rest of the harness. B-23 is the reverse light switch connector.


1G_StarterHarness_Rev1.jpg
 
Last edited:

thakingcb7

Proven Member
198
6
Feb 8, 2015
Lewistown, Pennsylvania
So I finally got a chance to trace the harness and found 2 cut wires. One red and the other red/blue. It looks like the right wire colors looking at your picture above. Now I just need to find a plug somewhere.
 

1990TSIAWDTALON

Moderator
7,461
3,562
Nov 14, 2013
Independence, Kansas
Sheridan is a wonderful place to get most of our connectors as i have bought quite a few for my 1990 Talon. I'm pretty sure that is the correct connector and here is a picture from my 1990 GSX that I just pulled the motor and tranny out of....they look the same to me
20160607_155150_resized.jpg
 

19Eclipse90

DSM Wiseman
4,901
699
Sep 29, 2003
OKC, Oklahoma
Look at it from a different perspective, Leo. All 1990-1999 DSMs with a 4G63 or 4G37 engine use the same reverse lights switch, part number MD730979. ;)

We'll have @brads clear up that bit of confusion on the Sheridan site in no time, though.
 

serviceguy

Proven Member
571
35
May 11, 2002
Clifton, New_Jersey
I would say that proves they are the same indeed, doesn't it? In case it did sound otherwise, I just wasn't sure if it was the same since the description of that connector on Sheridan's wasn't including 1Gs and I did not have access to ASA when I posted to confirm it. At the same time I would have hated for the OP to rush and buy the connector only to find it wasn't the right one.
 

thakingcb7

Proven Member
198
6
Feb 8, 2015
Lewistown, Pennsylvania
OHM Racing has been in contact with me in regards to the plug. They offer it in a pigtail for just a few $ more. I asked if it was the same between generations and they confirmed that not only is it the same but it's also the same plug for several other dsm sensors and whatnot.
 

brads

DSM Wiseman
840
73
Oct 24, 2002
Alta Loma, California
It is the same plug. I don't have a list of ALL of the applications for each plug on the Sheridan Engineering website, but I am slowly updating them.
 
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