what is it??

[cookmatt67]

Any idea what these parts are and what they go to??
this is behind the dash cluster on the drivers side


and this is the other side of the wiring on the passenger side


any help would be awsome!!

[71PA_Highboy]

What color is the wire in the top pic?

The bottom pic looks like Cab clearance light relay.

[cookmatt67]

the one looped wire is orange and i believe the other two are black with a red stripe. and the cab never had clearance lights so i dont think that is it unless the just installed the pieces at the factory in all cabs. btw the cab/wiring is a 69 model

[71PA_Highboy]

Neutral safety and backup lights IIRC.

[cookmatt67]

ok yhe big one is the parking light relay. havent figured out the other one yet

[basketcase0302]

cookmatt67 on Fri May 11, 2012 5:49 pm
ok yhe big one is the parking light relay. havent figured out the other one yet

I could be wrong, (been wrong before ) but I don't believe our trucks ever came with a "parking light relay". That relay is typically for the marker lights:


Is your truck an F-250 or an F-350?

[cookmatt67]

i know that the large relay energizes as soon as i put the parking lights on. the small one does look like the 25a circuitbreaker in this diagram.

[cookmatt67]

hmm looks as though you may be correct about the marker lights. took it all apart and found that the 69 and later f-250/350 marker light circuit is identical. hmmmm..... i'm thinking someone has changed the cab in the past. but there never were marker lights on the roof of this cab so it threw me off a bit as mine is a f-100 and there are no holes in the roof steel

[knightfire83]

They used that relay for trailer running lights also.