88-95 #50 TBI wiring harness

[davbell22602]

Are the 88-95 350tbi wiring harness all the same? And it is same wiring harness as the 305?

 

[reptilla]

350 and 305 are the same!! but the year span im not sure.

 

[FastOrange]

350 and 305 are the same!! but the year span im not sure.

88-92
93-94
95 (one year only)

 

[DRAGGIN95]

88-92
93-94
95 (one year only)

Word, the only odd thing is that some late 94 have the EST wire under the dash like the 95 instead of uder the power center under the hood like the early 94 and down.

 

[FastOrange]

Word, the only odd thing is that some late 94 have the EST wire under the dash like the 95 instead of uder the power center under the hood like the early 94 and down.

hmm, my '94 must be later model, its under the dash.

 

[DRAGGIN95]

Yeah it's a wierd mid year split, I have owned both an old 94 and newer 94, and that was the only difference I found in them.

 

[FastOrange]

Yeah it's a wierd mid year split, I have owned both an old 94 and newer 94, and that was the only difference I found in them.

that makes sense now, i always wondered why my old 1994 ECSB K1500 had it under the hood.

 

[dirtridinz71]

There are some differences in the 88-92 wiring harnesses too. My 92 needed a whole under hood wiring harness and I went to the junk yard and got one from a 1990 or 91 and there is one plug-in that it did not have. I thinki it was inside the cab around the computer. I ended up grabing the harness from my 92 ext cab that was idential. As far as 305/350 yes they are the same.

 

[davbell22602]

Thanks for the info. I'm getting ready to swap a motor from a 88 and putting it in a 90. I might need the engine wiring harness from the 88 for 90. The difference in the trucks are the 88 is C1500 auto trany and 90 is C2500 8 lug manual trany.

 

[FastOrange]

Thanks for the info. I'm getting ready to swap a motor from a 88 and putting it in a 90. I might need the engine wiring harness from the 88 for 90. The difference in the trucks are the 88 is C1500 auto trany and 90 is C2500 8 lug manual trany.

You qwont need to swap harnesses, Engines should be identical.