[Flat Black]

i got that 87 d100 gettin ready to put the 440 in but i cant figure out why i can start it with the key n why the heater dont work i got 2 wires i ran from the starter to in the cab so i can start it. any ideas why nuttins workin??

 

[Guest]

ignition switch?

 

[Flat Black]

changed it

 

[Chump]

Blown fusible link/s or bad connection at the firewall.

 

[SuperBurban]

Neutral start switch, or connections on the relay?