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Usually if no radio installed the relay won't be there. If the radio was installed at some point and then disconnected there may be a power lead floating around somewhere under the floor mat. Best to leave the relay out either way unless you are wiring something to the circuit.

If you use an Allison approved ATF

No shelf in there but would be easy to improvise something. Other side has the floor to ceiling comm rack. I may take it all out in favor of high back seating though. Havent decided yet.

I think the first gen trucks that have wtec3 were upgraded at some type of rebuild. I have taken a few apart they dont look like the dash was taken apart and harnesses replaced at unit level.

Its not a pain for me. If you want to do swaps and upgrades it can be. The 4x4 lmtv could drag the 6x6 deuce down the street backwards kickin n screamin though.

Are they both first gen trucks? A1 trucks have different wiring harnesses and dash instrumentation to begin with.

Thought you overland offroad guys put a luggage rack and some flood lights on the roof.

I got the part number from the first gen tms.

I have complete hyd manifolds. I think they are the same on the A1 trucks. All my A1 trucks are 3126 though, C7 stuff can be different but I dont have any experience with them. Will

I'm planning on putting a pair on my new tractor. I got the plug from pei for 20 bucks.

Got a new toy for myself. M1088A1 with a 3126. TX truck so no rust. These east coast trucks are hit or miss in the rust dept. Needs a few little things here and there nothing major. First mod was the air dryer. There is a noticeable difference in power between the M1088 and the A1 truck. Gotta...

You are driving a 160K+ truck. Its not a cheap hobby unfortunately.

I should have all the parts for it. Nothing expensive there except for the clutch itself.

The wtec3 is more sensitive to wiring harness connections and will throw error codes and halt where the wtec2 is a bit lower tech and more forgiving. I believe the wtec3 has more options to change parameters and has the newer style diag/interface connection. Wtec3 parts are easier to get the...

I have a cheater method of testing the clutch I run the truck with the cab folded and drain the air tanks while running. When the tanks are low the fan will engage when you close the tanks and the air starts to build it will disengage.

I have used these in several trucks with good results, they have a better light pattern than the first gen led bulbs. They are 12-24 multivolt and I havent had any flicker issues. Some euro cars run a small voltage thru all the lights on startup to check for bad bulbs, not enough to light and...

wtec3 looks like this. The body/frame to trans harness visually looks the same between the two.

Its not a plug and play swap. You would need a complete dash harness swap. The wtec3 ecu goes under the passenger dash. The harness going thru the cab out is different. The dash harness in a first gen truck is part of the relay breaker panel. I have taken apart the wtec2 keypad and used plastic...

The relays are standard bosch style 12 and 24 volt spdt. Variations are all over the internet for a few bucks each. Dill wont sell you parts you have to get them thru a distributor and they want quantity orders not one or two. I have the replacement contacts and locking tabs.

The tube one that's original is a pure air, the one on m939 trucks is the next gen pure air plus and the mrap style, also used on newer LMTVs, is the purest. One gen newer than the pure air plus.