Front axle upgrade options

[Polloso]

Hello all! I am new here and recently bought a 89' silverado K1500. Im in the middle of a fairly serious overhaul of the entire vehicle. Ive just completed painting the entire frame with POR-15 and am reassembling the front end before i install the new engine and trans combo. The original front diff was pretty loud and had awful oil in it so I found an entire replacement 8.25 with the same gear ratio. Not until after i got the new front diff (out of a 2000 tahoe) did I notice that i do not have provisions on the axle tube for the front axle solenoid. After researching the one I bought I realized it uses the newer 5 pin single electric harness.
My question am I screwed or is there an updated harness/actuator that will work. Thanks for any help!

 

[Schurkey]

I think you just need to convert from the thermal actuator to the motorized one, and there's an adapter harness to make that easier.

This one, I think. It's a Damned Dorman product, prices vary; and it's likely to be Chinese.

https://www.napaonline.com/en/p/NOE6002944?impressionRank=1

 

[Supercharged111]

You could cheap out and swap the iron side onto the newer diff. I bastardized the front diff in my 1500 this way to keep the newer actuator style on my 98 as I'd found a TBI truck with 4.10s in the pull and pay. Updating to the newer style actuator and wiring is definitely the better option here though.

 

[yevgenievich]

Just repinning and rewiring the plug will make the actuator work. There is a wire that have to run to the transmission area