Cali Steve Posted January 3, 2022 Share Posted January 3, 2022 Picked up a new blower resistor this weekend. Replacement has 4 electrical terminals. The old one has 5 terminals so I have a wire with no place to go. Any ideas where to put this one? Any help is appreciated. Link to comment Share on other sites More sharing options...
Ωhm Posted January 3, 2022 Share Posted January 3, 2022 I think if you have HI speed on the Blower Motor (BM), you have no need for that connector (C336_S). Might need a parts man here. Is there early 5_pin blower resistor (86/87) and a later 4_pin blower resistor? 87 Electrical Manual shows both. Link to comment Share on other sites More sharing options...
jdog Posted January 3, 2022 Share Posted January 3, 2022 Do you have a/c? I think ac uses 5 and non uses 4 Link to comment Share on other sites More sharing options...
eaglescout526 Posted January 3, 2022 Share Posted January 3, 2022 Soooooo 1984-86 of course got another oddity. 56000177-this number is specific to AC set ups only for those three model years Link to comment Share on other sites More sharing options...
Cali Steve Posted January 11, 2022 Author Share Posted January 11, 2022 Thank you for the help! I do have AC. Will be ordering the right part # today! Link to comment Share on other sites More sharing options...
cruiser54 Posted January 12, 2022 Share Posted January 12, 2022 This would be a good mod to do: CRUISER'S MOSTLY RENIX TIPS IMPROVING BLOWER MOTOR PERFORMANCE NOVEMBER 28, 2015 CRUISER54 28 COMMENTS On 1984 to 1990 MJs and XJs, the blower motor’s factory grounding point is on the driver side inner fender under the sheet metal screw. This ground is shared with windshield wipers, front windshield washers, rear windshield washers, AC clutch relay, fan control relay, fog lamps, fan motor, headlamps, front turn signals, front side markers, and park lamps. So your blower motor has its ground point 10 feet away from where it is located!! What we’re going to do is leave that ground intact and also ground the blower motor on the passenger side inner fender much closer to the blower motor itself. This will also benefit the other components on the factory ground circuit. Take this opportunity to refresh the factory ground as a matter of course. Remove the screw, scrape the surface to bare metal and reinstall the screw securely. Here’s what I do to get the ground much closer to the blower motor and add another ground point to this overloaded ground circuit. Find the blower motor connector on the passenger side. Red and Black two wire connector. Find a location where the black wire can be made to reach the passenger side inner fender, and cut the wire. You may have to do some rerouting of the harness to achieve this. Take both cut pieces of wire and put them together into a yellow eyelet and crimp. Fasten the eyelet to a place on the passenger side inner fender with a sheet metal screw after applying OxGard to the contact surfaces. Be sure to scrape the attaching point on the fender to bare metal first. Your blower motor will now turn faster and last longer, and the other electrical components on the circuit will benefit from a better ground path. Link to comment Share on other sites More sharing options...
omega_rugal Posted January 14, 2022 Share Posted January 14, 2022 more grounds, more pleasure Link to comment Share on other sites More sharing options...
frankspeed420 Posted September 11, 2022 Share Posted September 11, 2022 On 1/11/2022 at 3:09 PM, Cali Steve said: Thank you for the help! I do have AC. Will be ordering the right part # today! Did you find the correct part? I'm having trouble Link to comment Share on other sites More sharing options...
Cali Steve Posted September 14, 2022 Author Share Posted September 14, 2022 I ended up replacing just the thermal fuse itself instead of the entire unit. Picked one up at the electronics store, took about 5 minutes total. Link to comment Share on other sites More sharing options...
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