Windshield washer pump

[hgeranium]

2 questions:

 

Anyone know why there would two identical connectors for the washer pump right next to each other? They both go into the harness. Plugging my new pump into both does nothing when testing. I don’t hear the pump run at all. 

 

Second, does anyone have a picture of the order for how the washer components need to come together? Does the filter need to screw into the washer pump from inside the tank? It makes sense but I have no idea how to achieve that

1. Washer tank 2. Washer pump 3. Filter 4.  Bracket with grommet

[eaglescout526]

So the engine harness, for AMC to save money was to just use a harness for the XJ into the MJ. Rather than make a whole new MJ specific engine bay harness, they just tossed the XJ one with some of the same plugs still hanging around. 
 

You need to assemble the pump and filter to the tank outside of the truck. If I recall you’ll need a long extension and I believe an 11/16 deep socket for the filter. 

[hgeranium]

On 11/23/2025 at 10:15 AM, eaglescout526 said:

So the engine harness, for AMC to save money was to just use a harness for the XJ into the MJ. Rather than make a whole new MJ specific engine bay harness, they just tossed the XJ one with some of the same plugs still hanging around. 
 

You need to assemble the pump and filter to the tank outside of the truck. If I recall you’ll need a long extension and I believe an 11/16 deep socket for the filter. 

Getting the filter attached to the pump with a deep socket and extension is much smarter and simpler than whatever I was imagining. Thanks!

[eaglescout526]

12 minutes ago, hgeranium said:

Getting the filter attached to the pump with a deep socket and extension is much smarter and simpler than whatever I was imagining. Thanks!

Haha no problem! I’ve done it maybe about 4 or 5 times now.