Fuse block Bulk head harness

[RoryH19]

Hello,

What year did the fuse block change from round tube to the blade style?
Assuming somewhere between 79 - 81.

Any issues in retrofitting the later blade style into the older trucks?
I would change the harness inside the cab and under the hood.

Thanks

 

[gmachinz]

It changed in 1978

 

[RoryH19]

It changed in 1978

I saw a 78 on sat, still had the tube style. Verified via the vin. Maybe 78 had both.

 

[Termite_Delight]

I used most of a 1985 wiring harness in my '76. Older headlight harness plugged in with no issues.

 

[RoryH19]

I used most of a 1985 wiring harness in my '76. Older headlight harness plugged in with no issues.

Thanks

 

[Termite_Delight]

You will have issues with the windshield wiper switch, unless you use the newer column. High beam switch on the floor is an easy rewire.

 

[RoryH19]

You will have issues with the windshield wiper switch, unless you use the newer column. High beam switch on the floor is an easy rewire.

I was thinking to use 81 - 83.
That way it has the same style dash mounted wiper switch. It would also keep the floor dimmer switch.

 

[ali_c20]

79 has the blade style fuses. Dimmer switch on the floor and dash mounted wiper switch.

 

[legopnuematic]

My 79 is blade fuses as well.